Color: BlackTransmitting frequency: 2.4GHzLaser wavelength: 650mmLaser power: <5mwLaser range: >500mLaser emissive power below 0.5mWComplies with IDA standards DA103073System: Windows 2000/XP/VistaPower supply: 1 x AAA battery (NOT included)Dimension: 106*38*26mmColor: blackPackage Content:    1 x Wireless presenter    1 x USB wireless receiver