1. Light indicator The red light indicates that you can click the button during the speech, making the speech more handy. 2. Upgraded TYPE-C charging The charging interface is upgraded, the TYPE-C interface, and the charging is more stable and smooth. 3. LED digital display with strong endurance LED power display, large-capacity battery, red indicator light when charging, green when full, and can be used for 90 days on a single charge. 4. Plug and Play USB receiver, compatible with USB1.0/2.0/3.0, no need to install drivers, plug and use, convenient and fast. 5. 100M distance Adopting 2.4G wireless transmission, the signal is sensitive, the long-distance operation is accurate, the speech is smoother, the remote control distance is 100M, and the red light distance is 200M. Wide application scenarios Company meetings, training speeches, teacher teaching, etc.... Support Word/Excel/PPT document format page turning, support OS/Android/Linux/Win7 and above operating systems. Control technology: RF2.4GHZ Indicator light: red light Battery capacity: 180MAH Control distance: 100M Indicator light distance: about 200M Sleep current: less than 20uA : WindowsXP/7/8/9/10 OS/Linux/Android Receiver compatible interface: USB1.1/2.0/3.0 Working voltage: USB power supply 4.5-5.5V Colour:Silver Material:ABS Package Contents: 1 x Demonstrator 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.