Features: 1Can be used in computer, TV, for Windows, Mas, OS, for Android, for Linux, Tablet PC so on. 2All devices with USB keyboard are plug and play, easy and convenient to use. 3The 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. 420 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. 5Used 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. Condition: 100% Brand New Item Type: Wireless Presenter Material: ABS Model: K2 Wireless Frequency: 2.4Ghz Remote Control Range: Up to 20 meters USB: USB3.0/2.0/1.1 Light: Red light, spot Wavelength 650nm, power less than 5MW Battery Type: Lithium battery Battery Capacity: 300mAh Operating System: for Windows XP/Vista / 7/8, for OS, for Android Color: Black Package Included: 1 x Wireless Presenter1 x USB Receiver&nbsp1 x Charging Cable&nbsp1 x Manual&nbsp