Transmitting frequency: 2.4GHzSimple and easy to usePlug and Playlaser wavelength: 650mmLaser power: <5mwLaser range: >500mNice touch feeling、 comfort to hold by handLaser emissive power below 0.5mWComplies with IDA standards DA103073System: Windows 2000/XP/VistaPower supply: 1 x AAA battery (NOT included)Dimension: 106*38*26mmColor: blackNote: Due to the difference between different monitors、 the picture may not reflect the actual color of the item.We guarantee the style is the same as shown in the pictures、 but not the same performance on different bodies as on the model. Thank you!