Wide Compatibility: Compatible with Cellphone Tablet PC laptop Desktop with Android Windows 2000/ Me/ 98SE/ XP /Vista/ 7/ 8/10 system.Bluetooth 3.0 connection: Bluetooth 3.0 technology provides a cable-free & clutter-free connection,also saves USB port.very stable and reliable,no device drivers needed,no dropouts,fast data transmission,operating distance 10m(32.8ft).wireless design lets you take the Keypad anywhere.Multi-Function & Silent: This wireless numeric keypad has 22 keys with multi-function,With NumLock,ESC,Backspace etc,and a shortcut key which can open the computer calculator directly.Assist in accounting tasks, excel spreadsheets,and more to expand your existing keyboard.Great for spreadsheets worker,accounting staff and financial officer.Convenient to use in your office,home or business trip.Comfortable Ergonomic Design: This Scissor-Switch keyboard provides you with very comfortable and pleasing typing experience.15 tilt design fits the human body habits to prevent wrist strain with a tilted slope, Rubber Pads on back provide optimum comfort and securely keep the keypad in place.The wireless 22 key numpad is the perfect gift for bookkeepers working on excel,teachers entering grades,office workers for data entry,etc.