Inateck 2.4GHz Wireless Presenter Remote Powerpoint Presenter, Presentation Clicker PPT Pointer with USB Plug, Black 2.4G universal channel, 360&deg; control. Automatic frequency hopping technology avoids other RF signal interference. Supplied through an AAA battery (not included), swift and easy change, high availability; Unibody design, compact and portable. Magnetic wireless receiver integrated into the design of the presenter. Auto Stand-by and Sleep Mode, energy-efficient and durable. Independent power switch design helps to prevent electricity leakage. Supports plug and play, supports Windows XP/7/8/8.1/10, Mac OS, Linux, Android. Compatible with USB1.1, USB2.0, USB3.0, no driver or other programs are needed. Functions: Laser point, page turning, full screen, black screen. The laser will light on when pressing and go off when you remove your finger.