Product details WHY CHOOSE WEPSEN Presentation Clicker Wireless Presenter Remote Clicker? 1. PRESENTATION CLICKER WITH LASER POINTER: More than 10 years of wireless presenter developing experience, military level signal, highly sensitive(rf 2.4ghz wireless automatic frequency hopping technology avoids other rf signal interference), long control range can be up to 228 ft (70 meters, in an open environment), you can 360°freely control your presentation around every corner of your conference room, especially in a large space!