Feature: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 builtin 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 musicno need to switch switches or push buttons. turn up and down, full screen blank screen, indication hyperlink, TAB switch window control PPT.Specification:Condition: 100 percent Brand NewItem Type: Wireless PresenterMaterial: ABS Model: K2Wireless Frequency: 2.4GhzRemote Control Range: Up to 20 metersUSB: USB3.0 or 2.0 or 1.1Light: Red light, spot Wavelength 650nm, power less than 5MWBattery Type: Lithium batteryBattery Capacity: 300mAhOperating System: for Windows XP or Vista or 7 or 8, for OS, for AndroidColor: Black.Package List:1 x Wireless Presenter1 x USB Receiver 1 x Charging Cable 1 x Manual