I Focus Wired Mini slim keyboard Compact and space saving to leave you with more valuable work space, Using high-grade PVC material, it has perfect touch, smooth operation, reliable.In addition, it is flexible, durable.Compact & Light: 40% smaller than traditional clunky keyboards and as light as a billiard ball (6.7oz).Save more space on your desk or in your bag!Keyboard cover: Protect keyboard, waterproof and dustproof, the keyboard durable as new .Widely Application: Compatible with PC and desktop computers that have Windows XP / Vista / 7 / 8 / 10 operating systems.Keyboard Features: Plug and Play: Just plug the receiver into the USB port, no device drivers required.Portable:ergonomics design, thin and compact mini keyboard won't take up too much of your desktop space can easily on the laptop bag, no matter where you work, can effectively the input data.Easy to carry and store.Product Specifications: Model number:TT-A01 Size:28x12x1.8cm Type:wired Color:black/white Weight:280g Key number:78 Cable length:1.3m The key material:PVC Key cap material:ABS Connectivity technology:USB Package list: 1 x Wired Mini Keyboard 1 x Keyboard Cover Note: The Function number key 0-9,* - ./ is switched by Num Lock(The key behind F10).When you open Numlock the function button is work and the first indicator will light up.In this monment the letter(u/i/o/p/j/k and so on)is failure.