1. Mini Rechargeable Wireless Presenter. It features ergonomic buttons for comfortable operation. Design with a compact size, easy to use and carry everywhere. 2. It is equipped with top-grade microchip, up to 100 meters wireless range, 360 degree control. Operating on international 2.4GHz RF frequency, it is an ISM free frequency and can be used world-wide. 3. Supports Page Up/Down, full screen, screen sleep, and Hyperlink. Press Up for Page Up, press Down for Page Down. 4. Built in 240mAh rechargeble 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. 5. 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. 6. Operation system: Windows 2003, XP, Vista, Windows 7/8/10, Mac OS, Linux, Android.