Features: There is a dedicated air mouse switch for key, and the cursor control is more flexible and precise. The easy-to-operate full-screen labeling function can label and erase labels with one click. 2.4G green frequency, 30-meter operating range, 360-degree control, no directional restrictions. With automatic frequency hopping technology, it can effectively avoid other radio frequency signal interference.. Adopt 240Ah polymer lithium battery, Micro USB interface, can use computer USB port and mobile phone charger for charging, eliminating the trouble of replacing the battery. With volume adjustment function. Adopt RF-M1 optimal control technology to ensure 1 to 1 precise control without stringing codes; Wireless air mouse + page turning pen full function, full support for PowerPoint, Keynot e and Prezi. There is a low battery reminder function to prepare for important speeches in advance. The laser light of PP930A is on when you press it, which is in line with traditional usage habits; the laser light of PP930B is for always on, which eliminates the fatigue of long pressing. Specifications: Type: Wireless Presenter Material: PC+ABS Battery: 240Ah Lithium Polymer Battery Remote Control Technology: RF-M1 2.4GHz Distance: 30m/ 98.4ft; 360 free demonstration Support : PowerPoint/ Keynot e/ Prezi Features: Wireless, remote control, teaching assistant Length: 140x30x12mm/5.51x1.18x0.47in Color: Black Note: Due to differences in lighting and screen settings, the color of the product may be slightly different from the picture. Due to different manual measurements, please allow slight size differences. Package includes: 1 x Wireless Presenter 1 x Receiver 1 x USB Cable 1 x Manual