1、Can be used in computer, TV, for Windows, Mas, OS, for Android, for Linux, Tablet PC so on. 2、All devices with USB keyboard are plug and play, easy and convenient to use. 3、The battery is strong enough and durable. The built‑in lithium battery can be repeatedly charged. It is small and exquisite. It can be placed in the file bag or stationery bag at any time. 4、20 Meters remote control office or conference room or classroom and everywhere use, no matter what direction control PPT, video can be used as you like. 5、Used to control for PPT and music，no need to switch switches or push buttons. turn up and down, full screen blank screen, indication hyperlink, TAB switch window control PPT. 1 x Wireless Presenter1 x USB Receiver 1 x Charging Cable 1 x Manual  Condition: 100% Brand NewItem Type: Wireless PresenterMaterial: ABS Model: K2Wireless Frequency: 2.4GhzRemote Control Range: Up to 20 metersUSB: USB 3.0/ 2.0/ 1.1Light: Red light, spot ; Wavelength 650nm, power less than 5MWBattery Type: Lithium batteryBattery Capacity: 300mAhOperating System: for Windows XP/Vista / 7/8, for OS, for AndroidColor: Black