1、Linear Action Switch: 17 key mechanical numeric keyboard, mechanical linear action switch, excellent feel. 2、Plug and Play: The mechanical numeric keyboard is plug and play, USB interface, no driver required, and compatible with multiple systems. 3、HD Characters: Compact layout, wear resistant and clear characters, long key life, > 50 million times. With NumLock key, with Del key, etc. 4、Splashproof: The keyboard adopts a waterproof and splashproof design to avoid the loss caused by sudden water entry. Comes with four anti skid pads at the bottom. 5、Wide Applications: Suitable for different scenarios such as business, industrial control, security, road and bridge, etc. Item Type: 17 Key Numeric Keypad Material: ABS Model: DX 17A Keys: 17 Keys Cable Length: Approx. 1.4m / 1.5yd Key Structure: Mechanical Linear Action Switch Button Life: >50 Million Times Product Size: Approx. 140 x 102 x 25mm / 5.5 x 4.0 x 1.0in Function: Splashproof, Mechanical Linear Action Switch, with Numlock Key, with +-*/ Keys, with Del Key Applicable: Business, Industrial Control, Sound Visual Education, Security, Road and Bridge, Securities and Other Different Scenarios Support: For DOS, for Windows 95, for Windows 98, for NT, for ME, for 2000, for 2003, for XP, for VISTA, for Windows 7, for Windows 8, for Windows 10, for Linux, for OS X, etc. 1 x 17 Key Numeric Keypad