Feature: 1. Compatible Device: This numeric keypad has wide compatibility, and fit for Win, for Android, for OS X system, suitable for smartphones, laptops, desktops, tablets, for OS X Pro Air, and more 2. Power Supply: Built in 350mAh lithium ion battery, with a standby time of up to 120 hours when fully charged, supports Type C cable charging, and automatically enters sleep mode when not in use 3. Connection Modes: This numeric keypad supports multiple connection modes, 2.4G wireless, BT5.0 and BT3.0, which can be switched between different devices, providing a simple and fast input experience 4. 35 Keys Design: This number keypad provides all numbers, home, end, tabs, up or down page dedicated control key, calculator key, screen catch key, and other keys, to improve data input speed and accuracy 5. Sturdy and Practical: The keypad is made of ABS, stylish and sturdy; Ergonomic tilt, scissor key, and back non slip pad provide better comfort; With automatic sleep function, press any key to wake up the keypad Specification: Item Type: Numeric Keypad Product Material: ABS Product Size: Approx. 145 x 120 x 12mm / 5.7 x 4.7 x 0.5in Keys: 35 Keys Charging Interface: Type C Connection: 2.4G Wireless + BT5.0 + BT3.0 Operating Distance: Approx. 10m / 32.8ft Battery Type: 350mAh Lithium Ion Battery (Built in). Package List: 1 x Numeric Keypad 1 x Type C Charging Cable 1 x Receiver 1 x User Manual