Function: You can control the presentation page up or down by displaying full screen, indicator, genre, which allows for a special presentation. Office support, page turning, input, input, full screen, direct screen output, Windows switch support, etc. The SB receiver is magnetic and can be easily connected to the end of the pen. Large distance of about 15-20 meters / 49,2-65,6 feet, more convenience and less restrictions. The color of the laser is bright, and the indication of the direction of eye-catching, for input and light, simple and simple to enter. High quality chip, stable performance, protection against WIFI and Bluetooth connectivity. Suitable for public activities, training sessions, conferences, etc. Specification: Item Type: Clicker Material: ABS Colour black distance from remote control: about 15-20m/49,2-65,6ft Wavelength: 650 mm Power: < 5 mW Remote method: 2,4 GHz radio frequency technology Wireless Frequency: 2,4 GHz Voltage: 1,5 V List of packaging: 1 x pilot presentation, 1 x storage bag 1 x instruction manual