Model: Ideapad Slim 5

  Processor: Ryzen 7 5700U

  RAM: 8GB

  Storage: 512GB SSD

  Operating System: Windows 10 Home, OFFICE H&S 2019

  Display: 14" FHD IPS AG, 300N

  Graphic: INTEGRATED GRAPHICS

  Keyboard: Backlit Keyboard
4 Sided Narrow Bezel

� Model:�Aspire 5 A515-56G

� Processor:�Core i5-1135G7

� RAM:�8GB

� Storage:�512GB PCIe NVMe SSD

� Operating System:�Windows 10

� Display:�15.6" FHD IPS-BLK

� Graphic:�2GB NVIDIA��GeForce��MX350

� Keyboard:�

� Model:�Aspire 3 A315-58

� Processor:�Core i5-1135G7

� RAM:�8GB

� Storage:�1TB HDD

� Operating System:�Windows 10

� Display:�15.6" FHD IPS SlimBezel w/ FPR

� Graphic:�2GB Intel� Iris� Xe�Graphics

� Keyboard:�

� Model:�Aspire 3 A315-58G

� Processor:�Core i5-1135G7

� RAM:�8 GB

� Storage:�128GB PCIe NVMe SSD + 1 TB HDD

� Operating System:�Windows 10

� Display:�15.6" FHD Acer ComfyView LED LCD

� Graphic:�2GB NVIDIA� GeForce� MX350

� Keyboard:�

� Model:�Aspire 5 A515-56

� Processor:�Core i5-1135G7

� RAM:�8GB

� Storage:�512GB PCIe NVMe SSD

� Operating System:�Windows 10

� Display:�15.6" FHD IPS-BLK

� Graphic:�2GB Intel Iris Xe

� Keyboard:�

� Model:�Aspire 5 A515-56G

� Processor:�Core i5-1135G7

� RAM:�8GB

� Storage:�512GB PCIe NVMe SSD

� Operating System:�Windows 10

� Display:�15.6" FHD IPS-BLK

� Graphic:�2GB NVIDIA��GeForce��MX350

� Keyboard:�

� Model:�Aspire 3 A315-58G

� Processor:�Core i5-1135G7

� RAM:�8GB

� Storage:�1TB HDD

� Operating System:�Windows 10

� Display:�15.6" FHD Acer ComfyView LED LCD

� Graphic:�2GB NVIDIA� GeForce� MX350

� Keyboard:�

� Model:�Aspire 3 A315-42

� Processor:�R3-3300U

� RAM:�4GB

� Storage:�1TB HDD

� Operating System:�Windows 10

� Display:�15.6" HD Acer ComfyView LCD

� Graphic:� Radeon� Vega 6

� Keyboard:�

Experience superior printing performance with the Canon MG2570S All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� MG2570S

� Dimension:� 426 x 306 x 145mm

� Weight:� 3.5 Kg

� USP:� Affordable ink cartridges for high quality printing. Affordable All-In-One printer with basic printing, copying and scanning functions

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon PIXMA MG2570 All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� MG2570

� Dimension:� 426 x 306 x 145mm

� Weight:� 3.5 Kg

� USP:� Affordable ink cartridges for high quality printing. Affordable All-In-One printer with basic printing, copying and scanning functions

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon PIXMA G3070S Multi-function Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� MG3070S

� Dimension:� 426 x 306 x 145mm

� Weight:� 3.5 Kg

� USP:� Affordable All-In-One printer with Wireless LAN. Affordable Wireless All-In-One that comes with cloud and mobile printing solutions

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon PIXMA TS3370S All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� TS3370S

� Dimension:� 435 x 553 x 212mm

� Weight:� 3.9 Kg

� USP:� Compact Wireless All-In-One with LCD for Low-Cost Printing. This printer is designed to give you an affordable wireless printing experience at low running cost of 400 pages.

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon Pixma E410 All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E410

� Dimension:� 426 x 306 x 145mm

� Weight:� 3.4 Kg

� USP:� Affordable and Compact All-In-One printer

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon Pixma E470 All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E470

� Dimension:� 426 x 306 x 145mm

� Weight:� 3.5 Kg

� USP:� Affordable All-In-One Printer With Wi-Fi. The PIXMA Ink Efficient E470 is designed to give you an affordable wireless printing experience

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon PIXMA E3370 All-in-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E3370

� Dimension:� 435 x 316 x 145mm

� Weight:� 3.9Kg

� USP:� Compact Wireless All-In-One with LCD for Low-Cost Printing. This Ink Efficient printer is designed to give you an affordable wireless printing experience at low running cost of 400 pages

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon Pixma E510 colour inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E510

� Dimension:� 449 x 304 x 152mm

� Weight:� 5.3 Kg

� USP:� The PIXMA Ink Efficient E510 is built to give you an affordable printing experience. Besides print, copy and scan functionalities, the PIXMA E510 also offer innovative printing opportunities from My Image Garden software to dramatize your photos

� Function:� Print, Scan, Copy

Experience superior printing performance with the Canon E4270 All-in-One Ink Efficient WiFi Printer with FAX/ADF/Duplex Printing (Black). Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E4270

� Dimension:� 435 x 411 x 189 mm

� Weight:� 5.9 Kg

� USP:� Compact Wireless All-In-One with Fax and automatic 2-sided printing for Low-Cost Printing. This compact Office All-In-One features a 20-sheet Auto Document Feeder for productivity, and delivers 400 pages yield with high-capacity ink cartridges.

� Function:� Print, Scan, Copy, Fax

Experience superior printing performance with the Canon PIXMA G5070 InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� G5070

� Dimension:� 403 x 369 x 166 mm

� Weight:� 6.5 Kg

� USP:� Refillable Ink Tank Wireless Printer for High Volume Printing. Design for high volume printing at low running cost, this high performance wireless printer combines amazing compactness and a wide range of printing options for the complete home and small office printing experience.Gives 6000 pages mono and 7700 pages color

� Function:� Print

Experience superior printing performance with the Canon PIXMA G6070 All-in-one InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� G6070

� Dimension:� 403 x 369 x 195 mm

� Weight:� 8.1 Kg

� USP:� Refillable Ink Tank Wireless All-In-One for High Volume Printing. Design for high volume printing at low running cost, this high performance wireless printer combines amazing compactness and a wide range of printing options for the complete home and small office printing experience. Gives 6000 pages mono and 7700 pages color

� Function:� Print, Scan Copy

Experience superior printing performance with the Canon Pixma GM7070 All-in-One Wireless InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� G7070

� Dimension:� 403 x 369 x 234mm

� Weight:� 9.6 Kg

� USP:� Refillable Ink Tank Wireless All-In-One with Fax for High Volume Printing. Designed for high volume printing at low running cost, this high performance wireless printer combines amazing compactness and a wide range of printing options for the complete home and small office printing experience. Gives 6000 pages mono and 7700 pages color

� Function:� Print, Scan Copy, Fax

  Model:  LIDE300

  Dimension:  250×367×42mm

  Weight:  1.7 Kg

  USP:  Fast and Compact Flatbed Scanner. Capture fast, accurate scans of documents and photos with this affordable and compact flatbed scanner

  Function:  Scanner

  Model:  LIDE400

  Dimension:  250 × 367 × 42mm

  Weight:  1.7 Kg

  USP:  Fast and Compact Flatbed Scanner with Upright Scanning. This fast and compact flatbed scanner supports multiple page PDF scans

  Function:  Scanner

Experience superior printing performance with the Canon LBP2900B Single Function Laser Monochrome Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� LBP2900B

� Dimension:� 370 x 251 x 217mm

� Weight:� 5.7 Kg

� USP:� Smaller, lighter & better than ever. A robust printer with all the feature benefits, the LBP2900B fits into any small office environment while ensuring the equivalent of high 2 400 x 600dpi laser-quality and jam-free operations for perfect prints, fast.

� Function:�

Experience superior printing performance with the Canon LBP6030W Image Class Laser Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� LBP6030W

� Dimension:� 364x249x199 mm

� Weight:� 5.0 Kg

� USP:� Great performance and small footprint with wireless connectivity. Compact and efficient, the LBP6030w is designed to help save space and perform high-speed print jobs, with low energy consumption. Set up wireless printing effortlessly with the WPS button.

� Function:�

Experience superior printing performance with the Canon imageCLASS LBP6030B Single-Function Laser Monochrome Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� LBP6030B

� Dimension:� 364x249x199 mm

� Weight:� 5.0 Kg

� USP:� Great performance with a small footprint. Compact and efficient, the LBP6030B is designed to help save space and perform high-speed print jobs, with low energy consumption.

� Function:�

Experience superior printing performance with the Canon E560 All-In-One Inkjet Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Model:� E560

� Dimension:� 449 x 304 x 152mm

� Weight:� 5.4 Kg

� USP:� Advanced Wireless All-In-One with Auto Duplex Printing for Low-Cost Printing. The Ink Efficient E560 is designed to give you an affordable wireless printing experience at low running cost of 800 pages

� Function:� Print, Scan, Copy

Experience superior printing performance with the Epson TM-m30 Bluetooth/Ethernet Thermal POS Receipt Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

Connect seamlessly with a sleek, 3" POS receipt printer

Experience superior printing performance with the Epson Corporation TM-T88VI Bluetooth Monochrome Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

A pathbreaking POS printer with advanced connectivity and cloud support

Experience superior printing performance with the Epson TM-P20 2 Inch Mobile Thermal POS Receipt Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

Epson�s TM-P20 POS printer delivers portable efficiency so you can step beyond the counter

Experience superior printing performance with the Epson TM-U295P Receipt Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

An amazingly compact, versatile POS printer that's perfect for cheque and credit card authorisation

Experience superior printing performance with the Epson TM-T82X POS Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

Cost-effective high-speed POS printing for businesses of all scales.

Experience superior printing performance with the Epson EcoTank M1100 Monochrome InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.5 x 26.7 x 16.1

� Weight:� 3.5 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed

� Function:� print

Experience superior printing performance with the Epson EcoTank Monochrome M1120 Wi-Fi InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.5 x 26.7 x 16.1

� Weight:� 3.5 kg

� USP:� wi-fi enabled, black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed

� Function:� print

Experience superior printing performance with the Epson M2110 EcoTank Monochrome All-in-One InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.5 x 26.7 x 16.1

� Weight:� 3.5 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed, print, copy, scan

� Function:� print, copy, scan

Experience superior printing performance with the Epson EcoTank M200 Multifunction Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.7 x 43.5 x 22.6

� Weight:� 6 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed, print, copy, scan, ADF

� Function:� print, copy, scan

Experience superior printing performance with the Epson ECOTANK M105 Single Function InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 26.7 x 43.5 x 14.8

� Weight:� 3.4 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed

� Function:� print

Experience superior printing performance with the Epson M2140 EcoTank Monochrome All-in-One Duplex InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.5 x 34.7 x 30.2

� Weight:� 6.2 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed, print, copy, scan, auto duplex

� Function:� print, copy, scan

Experience superior printing performance with the Epson PictureMate PM-520 Photo Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 26.5 x 19.6 x 13.7

� Weight:� 2.3 kg

� USP:� photo printer, A5, wi-fi, LCD screen, affordable, heat-free, home, office, hobby, event, low cost printing

� Function:� print

Experience superior printing performance with the Epson M2120 All-in-One Monochrome InkTank Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.5 x 26.7 x 16.1

� Weight:� 3.5 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed, print, copy, scan, Wi-Fi

� Function:� print, copy, scan

Experience superior printing performance with the Epson M205 EcoTank Wi-Fi Multifunction Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

� Dimension:� 37.7 x 43.5 x 22.6

� Weight:� 6 kg

� USP:� black and white, monochrome, printer, low cost printing, high yeild, Epson, business, office, heat-free, ink bottles, spill free, error free, affordable, high speed, print, copy, scan, ADF

� Function:� print, copy, scan

Experience superior printing performance with the Epson LX-310 Dot Matrix Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

A 9-Pin Narrow Carriage Impact Printer by Epson.

Experience superior printing performance with the Epson LX-1310 Serial Impact Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

Attain fast printing speed and unparallel reliability with the Epson LQ-1310

Experience superior printing performance with the Epson FX-890II Dot Matrix Printer. Designed for efficiency, this advanced printer delivers high-quality prints with vibrant colors and sharp details, making it perfect for home and office use.

• High-speed printing for fast document processing
• Crisp and clear output with laser technology
• Wireless and wired connectivity for seamless operation
• Large paper capacity for uninterrupted printing
• Easy maintenance and user-friendly interface

A nine-pin dot matrix printer offering faster printing, and outstanding reliability