Transmitting frequency: 2.4GHz Simple and easy to use Plug and Play * Freely Control your presentations up to 15 meters away Nice touch feeling, comfort to hold by hand Laser emissive power below 0.5mW * Complies with IDA standards DA103073 System: Windows 2000/XP/Vista Certificate: FC, CE, RoHS * Power supply: 1 x AAA battery(NOT included) Dimension: 106*38*26mm Color: black * Unit net weight: 28 Unit packing gross weight: 92