DetailsHIGHLIGHTS [ Aluminum alloy ] - The product is made of high quality aluminum alloy and ABS material; which is beautiful and hand feels is good. [ Full-sized 28-key with Numlock; Delete; Tab & More ] - Use the wireless keypad with 28 function keys including backspace; home; end; tab and more to assist in accounting tasks; excel spreadsheets; and more to expand your existing keyboard. [ Compatibility ] - Widely Compatible with Cellphone Tablet PC laptop Desktop with Android Windows 2000/ Me/ 98/ XP /Vista/ 7/ 8/10 system. NOTE - [This number pad is NOT completely compatible with Macbook OS system and Apple iOS system; Calculator Key and Functional Keys(home; end; Pgup; PgDn and arrows) can not work but other number and symbol keys including ESC; Tab work well. [ Bluetooth & Wired Dual Mode ] - Bluetooth 3.0 technology provides a cable-free & clutter-free connection; operating distance 10m. but it also support Wired connection [ Advanced Scissor Switch ] - This Scissor-Switch keyboard provides you with very comfortable and pleasing typing experience. [ N970 with USB3.0 HUB ] - In addition to being used as a numeric keypad; it can also be used as a HUB. The two expansion interfaces are USB3.0; which transmits 5Gbps per second and is compatible with a variety of devices. ( N960 no USB HUB) SPECIFICATION -Item Weight - 95g - Item Dimension - 121*100*112.5mm - Number of Keys - 28 keys - Switch - Scissor Switch - Battery Required - 140mAh lithium battery - Bluetooth work distant - 10m