Specifications:Standby power consumption: 25uaRemote control distance: 8-10mCharging port: Micro USBOverall dimension: 155*45* 9mmBattery type: 250mah /3.7V lithium batterySupport system: Android /Windows /Mac OS/LinuxWireless modulation mode: GFSKModulation frequency: 2.4-2.4835ghzWorking temperature:-20 C-65CNumber of keys: 58Power consumption:15maFeatures:- [2.4GHz&Bluetooth Dual Mode]- M5 BT Multi-Function air mouse with 2.4GHz and Bluetooth Dual Model, you can choose any mode when working.- [Multi-Functions]- M5 BT with two sides, one side with, another side is a wireless keyboard with 58 Keys and a Touch Panel.- [Gyroscope Function]-With 3-Gyro + 3-Gsensor, its more convenient to easily operate in horizontal and vertical mode.-[ Backlight Function ]-The backlight of laser engraving is clearly mapped to each character. When long press the backlight button you can turn on /off the backlight function.-[ IR Learning Function ]- The power button supports the infrared programming function, it is easy to set this function in only two steps according to the user manual.Package includes:1 x M5 Wireless Keyboard1 x USB Cable1 x USB Dongle1 x User Manual