Wireless Presenter, Doosl&reg; Rechargeable Wireless Presenter, 2.4GHz Powerpoint Presentation Remote Control with LCD Display Doosl Rechargeable Wireless Presenter is equipped with top-grade microchip, up to 100 meters wireless range. The button is made of nickel plating metal dome and silicone+plastic, brings you comfortable touch feeling. Two Mode:In the Page Turning mode, you can carry out the operations as follows: Page Up/Down, Full Screen, Screen Sleep, Volume Up/Down, and Hyperlink. In the Mouse mode, you can move the mouse up, down, left or right, and use Left/Right Mouse button. You can easily switch between the two modes via a button. Also, Supports computer volume adjustment. The mini USB receiver supports plug and play technology. No driver is required. It is compatible with USB 1.1/2.0/3.0 port. Operation system: all Windows system, Mac OS, Linux, Android. Supports PowerPoint, Keynote. Clock Vibration Setting helps to remind you of speech time control.Built-in LCD to easily know time,remaining power,signal and mode status. Power Saving: Built in 300mAh rechargeble Li-polymer battery. 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.