2.4GHz Wireless Presenter Remote Red Light Pointer Rechargeable Presentation Clicker Wireless Presenter USB PPT Flip Pen White: Low Battery Indicator.When the battery is too low, the indicator light will be blue and flicker for a while.USB Receiver, Plug and Play. Compatible with USB 1.0, USB 2.0, USB 3.0.Wide Compatibility. Compatible with Window xp, Win 7/8/10, /iOS, Android, and Office series page-turning format files.Bright Red Light Pointer. A warm reminder for participants to catch each detail you speak.Remote Control. 100m remote control distance, over 200m red light range plus 360° control, enable you to give presentation at ease and be free of worry about distance.Adopting 2.4Ghz transceiver, it offers low power consumption and good performance,used widely in any kind of public occasions. Specification: Transmitting technology: 2.4Ghz transceiver Package size: 170* 55* 25mm / 6.69* 2.17* 0.98in Battery: Lithium battery Red light range: >200m Item weight: 24.5g/ 0.86oz Remote control distance: 100m Rated voltage: 3.7V Battery capacity: 200mAh Package weight: 52g / 1.83oz Item size: 130* 21* 12.5mm/ 5.12* 0.83* 0.49in Packing list: 1 * USB cable 1 * Presenter 1 * User manual Low Battery Indicator. When the battery is too low, the indicator light will be blue and flicker for a while. Bright Red Light Pointer. A warm reminder for participants to catch each detail you speak. Wide Compatibility. Compatible with Window xp, Win 7/8/10, MAC/iOS, Android, and Office series page-turning format files. USB Receiver, Plug and Play. Compatible with USB 1.0, USB 2.0, USB 3.0. Remote Control. 100m remote control distance, over 200m red light range plus 360° control, enable you to give presentation at ease and be free of worry about distance.