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Product model: touch numeric keypad)
Material: ABS plastic
Supported systems: iOS, Android, Windows
Number of keys: 22
Wireless/Bluetooth scheme: Nordic (nRF51802) Bluetooth+2.4G dual-mode
Bluetooth version Bluetooth 4.2
Keyboard life (keystrokes): 5 million times
Response speed: 30ms
Wireless/Bluetooth transmission distance: 10m
Working current/voltage: 1mA/3.7V (typing), 7mA/3.7V (touching)
Built in lithium battery: Yes
Battery type&capacity: polymer flexible lithium battery 303450500MAH
Charging time: 3 hours
Charging port type: TYPE-C
Service time: more than 6 hours
Standby time:>6 months
Regular color: black
Net weight of product: 166g
Gross package weight: 260g