Features: brand new and high quality for Windows 2003, XP, Vista, for Windows 7/8/10, for Mac OS, Linux , Andorid operating system, support PowerPoint, Keynote and Prezi. 100 meters operating range, 360-degree control, strong visibility. Plug and for play, and the USB receiver is easy to store; Automatic frequency hopping technology, effectively avoid other radio frequency signal interference Function: page up, page down, full screen/exit full screen, black screen/exit black screen, TAB for key, ENTER for key, window switching Specifications: Process: Radio Frequency Frequency: 2.4GHz Remote control excitation: 100m Laser-Registration: 2 R Laser- for head maximum output power: <5mW Laser- distance: >200m Band: 532nm Battery capacity: 400mAh polymer Lithium Working voltage: 3.6V~4.2V Sleep current: <5uA Product size: approx 133 x27x13.3mm/5.24x1.06x0.52in Product weight: 46g Laser- Color: Green Light Function: page up, page down, full screen/exit full screen, black screen/exit black screen, TAB for key, ENTER for key, window switching Package Includes: 1Set x PPT Pen note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.