A202 Bluetooth Laptop Keyboard Portable Wireless 2.4G Keyboard Number Keypad for Windows/8-Pin/Android - Grey ?Bluetooth + 2.4G wireless dual connection ways ?The latest Bluetooth technology provides cable-free and clutter-free connection,operating distance of 10m without delay ?2.4G wireless mode is convenient for the desktop computer or laptop without Bluetooth function ?The USB receiver is just plug and play without installing additional software or driver,ensures stable and reliable connection ?Standard numeric keypad and shortcut keys also help you greatly improve your workflow and efficiency ?Specification: ?Connection method: Bluetooth+2.4G wireless ?Working range: 10m ?Rated voltage/current: 3.7V/1A ?Modulation method: GFSK ?Battery type: polymer lithium battery ?Battery capacity: 300mAh ?Button life: 5 million clicks ?Working temperature: -10??-+55?? ?Supported 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