100% Brand New. Color: Black Transmitting frequency: 2.4GHz Simple and easy to use Plug and Play laser wavelength: 650mm Laser power: Laser range: >500m Nice touch feeling、 comfort to hold by hand Laser emissive power?below 0.5mW Complies with IDA standards DA103073 System: Windows 2000/XP/Vista Power supply: 1 x AAA battery (NOT included) Dimension: 106*38*26mm Color: black Package Content: 1 x Wireless presenter 1 x USB wireless receiver