Description: USB Wired technology, Plug and Play, no device drivers, signal transmission stability, no delay,Ergonomic tilt and anti-slip pads on back provides optimum comfort Numeric Keypad compatible with windows 98/95/NT/ME/2000/XP/Vista/7.0/8.0 Keyboard comes with 18 keys of 0-9 number keys, Del, Enter, Num Lock, Backspace, + - * /. ABS Material, Small, Slim design, Numeric Keypad is easy to take with you,Applicated in notebook computer, banking, school, company etc No battery required, It enters into hibernation/sleep mode automatically, energy saving, extended service life, don't have to worry about your Numeric Keypad for laptop will be no power Specification: Material: ABS Number of keys: 18 keys Voltage: 1.5V Current: 6mA Cable Length: 1.26m Color: Black Connection with computer: wired Plug and play: support Size: 14 x 8.50 x 2 cm Package Includes: 1 Piece Mini Numeric Keypad