wireless number pads, numeric keypad numpad 22 keys portable 2.4 ghz financial accounting number keyboard extensions 10 key for laptop, pc, desktop, surface pro, notebook foloda <b>specifications</b><br> keys: 22 keys<br> color: black<br> weight: 87g<br> item dimensions l x w x h : 12.5 x 9.5 x 2.5 cm /5.31 x 3.74 x 0.99 inches<br> system support: windows xp, windows vista, windows 7 / 8 / 10<br> <b>note</b><br>: numeric keypad is not fully compatible with mac os. (because apple doesn't support external keyboards with function keys)<br><br> <b>package list</b>:<br> 1 x wireless numeric keypad 1 x user manual