Features 1、Low Battery Indicator. When the battery is too low, the indicator light will be blue and flicker for a while. 2、USB Receiver, Plug and Play. Compatible with USB 1.0, USB 2.0, USB 3.0. 3、Remote Control. 100m remote control distance, up to 200m red light range plus 360° control, enable you to give presentation at ease and no worry about distance. 4、Bright Red Light Pointer. A warm reminder for participants to catch each detail you speak. Adopting 2.4Ghz RF transceiver, it offers low power consumption and great performance, used widely in any kind of public occasions. 5、Wide Compatibility. Compatible with for Window xp, for Win 7/8/10, for OS X, for Android, and Office series page turning format files. Specification Remote control distance: 100m Red light range: ≤200m Battery capacity: 200mAh Rated voltage: 3.7V Transmitting technology: 2.4Ghz RF transceiver Item size: 130 x 21 x 12.5mm/ 5.12 x 0.83 x 0.49in Item weight: 24.5g/ 0.86oz Package List 1 x Presenter 1 x USB cable 1 x User manual