:Mini rechargeable wireless presenter.It features ergonomic buttons for comfortable operation.Design with a compact size, easy to use and carry everywhere.It is equipped with top-grade microchip, up to 100 meters wireless range, 360 degree control.Operating on international 2.4G RF frequency, it is an ISM free frequency and can be used world-wide.Supports Page Up/Down, Full Screen, Screen Sleep, and Hyperlink.Press "Up" for Page Up, press "up" for seconds for Full Screen/Exit; Press "Down" for Page Down, press "up" for seconds for Screen Sleep/Exit.Built in 240mAh rechargeable Li-polymer battery.You can charge it by a laptop or wall adapter via the standard Micro USB input port.Don't need to replace batteries again and again.Convenience to use.Power Saving: Comes with auto standby and deep sleep functions for energy-saving,and equipped with a separate switch and effectively avoids unwanted power consumption when you put it in your bag.Features:100% brand new and high quality.Ergonomics button designInternational 2.4G RF frequencyUp to 100 meter wireless rangeMulti-function200-250mAh rechargeable Li-polymer batteryAuto standby functionsCompact and portableSpecifications:- Transmitter:Item Type: Wireless PresenterMaterial: Plastic+SiliconeColor: Gray (shown as pictures)Size: 783718mm/3.071.460.71 in (Approx.)Wireless: 2.4G WirelessTechnology: Radio FrequencyFrequency: 2.4GHzLaser Class: IIMax Output: 100mWavelength: 650nmBuilt-in battery: 240mAh polymer LithiumWorking Voltage: 3.6V~4.2VSleep Current: