1、Stable Connection: This 18 keys numeric keypad adopts wired USB0, 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. 1 x Numeric Keypad Item Type: Numeric KeypadMaterial: ABSButton Life: More Than 10 Million TimesType: USB 2.0 WiredKey: 18 KeysProduct Size: Approx. 140 x 86 x 20mm / 5.51 x 3.39 x 0.79in ( Manual Measurement Allows Error )Interface: USB