7 Unique Backlight Color: 7 Elegant LED backlight with 3 brightness level. Easy Setup: Simply insert the 1.2M (4 feet) USB wire into your computer and use the keyboard instantly. Ergonomic design: Scissors X structure gives you the comfortable typing experience, low-profile keys offer quiet and comfortable typing. Ultra Thin and Light: Compact size (16.7 X 4.5 X 0.24in) and light weight (17.4oz) but provides full size keys, arrow keys, number pad, shortcuts for comfortable typing. Package contents: Arteck Backlit USB wired Keyboard, welcome guide, our 24-month warranty and friendly customer service.