Brand N/A Model 820A Wireless 2.4G Power Supply 1 x AAA battery (included) Distance 20 M Laser Pointer Supported Red laser pointer Color Black Supports System Windows 2000/XP/Vista/7 Features To make your presentation flow continuously the powers enter integrates the slide up / down function with a laser pointer on a remote handheld device using a wireless technology; The power sender's attractive and compact design enables mobility up to 20 meters (RF) or 15 meters (red laser) from the laptop / PC while still maintaining a full navigational control of your presentation; Supports RF and red laser; Modulation frequency: 433MHz (RF) / 315MHz (red laser); Remote range: 20 meters (RF) / 15 meters (red laser); Laser range: 200 meters; Compatible with PC / AT; Page up / Page down function; Mini design convenient to carry and use Packing List 1 x Presenter 1 x Receiver 1 x AAA battery 1 x Water resistant bag 1 x English user manual