Bluetooth and 2.4G wireless dual connection waysThe latest Bluetooth technology provides cable-free andamp clutter-free connection, operating distance of 10m without delay2.4G wireless mode is convenient for the desktop computer or laptop without Bluetooth functionThe USB receiver is just plug and play without installing additional software or driver, ensures stable and reliable connectionWith shortcut keys, it help you greatly improve your workflow and efficiency Specification: Connection method: Bluetoothand2.4G wirelessWorking range: 10mRated voltage or current: 3.7V or 1AModulation method: GFSKBattery type: polymer lithium batteryBattery capacity: 300mAhButton life: 5 million clicksWorking temperature: -10-and55Supported systems: Windows, iOS, Android Package included: 1 x Keyboard 1 x Cable 1 x USB Receiver 1 x English User Manual Other items not included Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.