1. Aluminum alloy 35-key wireless ultra-thin external universal numeric keypad, compatible with Bluetooth 5.0. 2. Dual system settings, support for Windows8/8.1/10 and for Mac OS systems, asynchronous link design, does not interfere with computer operation. 3. For MAC OS mode, you can set the F13~F19 keys to any shortcuts recognized by the system. 4. 60 minutes keyboard no input, the keyboard enters sleep mode. 5. Can work continuously for 130 hours, continuous standby for 180 days. Item Type: Numeric Keypad Material: aluminum alloy Optional Color: Black / Iron Grey Compatible with Bluetooth version: Compatible with Bluetooth 5.0 Working distance: 8-10 meters Battery capacity: 300 mAh Charging voltage: DC 5V Working voltage: DC 3.7V Working current: 1~3mA Continuous working time: 130 hours Sleep mode: 60 minutes keyboard No input, the keyboard enters sleep mode Standby current: 40uA Standby time: 180 days continuous standby Note: The use of multimedia keys, the symbols on top indicate the function of these keys for Windows mode, the symbols at the bottom (for F13~F19) indicate their functions for mac mode. 1 x Numeric keypad 1 x User Manual 1 x data cable