Features: 1.Stable Connection: This 18 keys numeric keypad adopts wired USB2.0, and it supports plug and play, which ensures stable connection and no delay. 2.Wide Compatibility: This 18 keys numeric keypad is suitable for Android tablet, for Linux, for Chromebook, for Win XP, For Win Vista, 7, 8, 10. 3.Ergonomic Design: This 18 keys numeric keypad features ergonomic design and nonslip pad, providing comfortable use experience. 4.Long Service Life: This 18 keys numeric keypad adopts ABS material, the keycaps of a numeric keypad has a long service life of more than 10 million times. 5.Silent Working: This 18 keys numeric keypad is easy to press in silence, which is suitable for band, school, office, etc. specification:Item Type: Numeric Keypad Material: ABS Button Life: More Than 10 Million Times Type: USB2.0 Wired Key: 18 Keys Product Size: Approx. 140 x 86 x 20mm / 5.51 x 3.39 x 0.79in ( Manual Measurement Allows Error ) Interface: USB PackageList:1 x Numeric Keypad