Fangrui Product Details Features: 1. Mechanical Feel Digital Keyboard, Waterproof Splash Design, Higher Than The Design Of The Key , Effectively Prevent Accidental Water Ingress Do Not Have To Worry About Tea Into The Keyboard Failure 2. Floating Keys, Mechanical Feel 3. With Backspace Key, Driver-free, Easy To Carry, Plug And Play 4. Comfortable Feel, Zero Pressure, Strong Compatibility 5. When Removing The Keycaps, Do Not Let Water In. Description: 1. Number Of Keys: 19 (keys) 2. Waterproof Function: Support Waterproof 3. Material: Abs 4. Applicable Models: 5. Button Technology: X Architecture 6. Product Size: 13.5 X 8.5 X 3.4cm 7. Backlight Function: No Backlight Support 8. Type: Numeric Keypad 9. Color: Black Power Supply Mode: 1 Aaa Battery (not Included) Specification: Wired Package Contents: 1 X Connection Cable 1 X Numeric Keypad Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Rea