Features: 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 system, asynchronous link design, does not interfere with computer operation. 3.For MAC OS mode, you can set for F13~F19 keys to any shortcuts recognized by the system. 4.60 minutes keyboard no input, the keyboard enters the sleep standby state. 5.Can work continuously for 130 hours, continuous standby for 180 days. specification:Item Type: Numeric Keypad Material: Aluminum Alloy Optional Color: Black / Iron Gray Compatible with Bluetooth Version: Compatible with Bluetooth 5.0 Working Distance: 8-10 Meters Battery Capacity: 300mAh 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 The Sleep Standby State Standby Current: 40uA Standby Time: 180 days of continuous standby Note: The use of multimedia buttons, the symbols at the top indicate the function of these buttons for windows mode, the symbols at the bottom (for F13~F19) indicate their functions for mac mode. PackageList:1 x Numeric Keypad1 x User Manual1 x Data Cable NoteThe use of multimedia buttons, the symbols at the top indicate the function of these buttons for windows mode, the symbols at the bottom (for F13~F19) indicate their functions for mac mode.