It suit Windows XP Windows Vista and Windows 7、window 8、window 10USB interfaceRed laser pen: in most background can be easily seen. Use distance for as long as 15 meters: can make in the room free walk around and interact with the audience. Battery power indicator: can make you understand the power balance situation、 On/off switch can extend battery life.Intuition type slide control button: can make you survey presentation material. Button a touch vested.The design of the exterior of the smooth feel perfect achievement.Red Laser PointerMake it easy for your audience to see exactly what you¡¯re pointing toWireless range of up to 50 feet(15 meters)Move around.Work the room.Meet your audience.With a long range、you can mingle with the crowd for greater inpact and engagementIntuitive slideshow conrtolNavigate through your presentation with confidence.Buttons are easy to find by touch.And its shape feels great in your handSimple to set up、easy to pack upPlup-and-play simplicity means it¡¯s easy to get started-there¡¯s no software to install.When the show is over、just store the receiver in the presenter、tuck the presenter into the carrying case、and you¡¯re offSysten Requirements:Windows XP、Windows Vista or Windows 7、USB portMeasurement and weight :Transmitte: dimension:11.4*3.7*2.5cm weight:31gReceiver : dimension:5.9*1.6*0.6 weight:5gBox: dimension: 22*16.5*6cm weight: 187gPackage contents: Wireless Presenter R400Wireless mini-receiverCarrying caseQuick-start guideWarranty&quality assurance cards