SpecificationSimple 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*26mmFeatures1A bright red laser pointer that's easy to see against most backgrounds， highlight key areas of your slides2.Wireless remote control distance range of up to 39-foot ， so you can free to move around the room and interact with your audience3.Buttons: laser pointer， display of black screen， next， previous， full screen， on/off switch; One-touch keys easy to control slideshow; About laser pointer: hold down the button to keep the laser onDelivery:7-15 days to the United States via E-PacketPackage Content:1 x Wireless Presenter remote control1 x Ultra-Slim Wireless Receiver1 x User Manual