Aluminum numeric keypad

Material: Aluminum alloy + ABS plastic
Support system: Windows, iOS, Android
Number of keys: 34 keys
Wireless/Bluetooth solution: Broadcom (BCM20730)
Bluetooth version: Bluetooth 3.0
Keyboard life: (number of keystrokes) 5 million times
Response speed: 5 milliseconds
Wireless/Bluetooth transmission distance: 10 meters
Working current/voltage: 2mA/3.7V
Built-in lithium battery: Yes
Battery type & capacity: polymer soft pack lithium battery 302323-110mAh