Features: brand new and high quality Advanced technology of spotlights, magnification, give you a superior presenting experience like never before. Presentation clicker also combines the functions of mouse-like wireless cursor control, anti-lost reminder, timer, full/ black screen, page up, page down No need to download software, clicker remote has accompanied software in the TFcard in the usb dongle, just click it then switches on presentation pointer and ready go Traditional-laser can be harmful to eyes if misused. Digital-laser is safe as well as has excellent performance on LED/ LCD screens. The size and color of digital-laser dot can be easily adjusted With initiative anit-lost function. Built-in timer efforts to present without concern about presentation timing. Vibrates in your hand makes for silent awareness of timing. Widely suitable for computer and laptop system, and can be used for PowerPoint Specifications: Wireless modulation method: GFSK Modulation frequency: 2.4~2.4835GHz Transmit power: 5dBm Working current: maximum working current: 15ma. Standby current: When the button is raised, it is standby: