1、Driver Free Installation: The presentation clicker is easy to install, plug and play, no drive required, simple operation and convenient to use. 2、Ergonomic Design: It has an ergonomic design, a comfortable grip, and a matte texture treatment process that is not easy to leave marks. 3、Long Standby Time: This presentation clicker is charged with lithium battery and has a long standby time. It can stand by for 90 days on a single charge. 4、Sensitive Buttons: The buttons are sensitive, and the push type physical button has a raised design, which can be operated freely without looking down. 5、Low Radiation: The radiation is small, and the laser can be measured immediately, which meets the national testing standards. 1 x Presentation Clicker1 x Receiver1 x Charging Cable1 x User Manual Item Type: Presentation ClickerMaterial: ABSModel: for LZ-B1Launcher:Control Technology: RF 2.4GHzControl Distance: Approx. 100meters / 109.4ydLaser Distance: Approx. >200meters / > 218.7ydWorking Voltage: 3.7VSleep Current: <20uAOperating System: for Windows XP 7 8 10, for OS X, for Linux, for Android QBattery Type: 200mAh Rechargeable Lithium Battery (Built in Battery)Receiver:Compatible Interface: USB 1.1/ 2.0/ 3.0Operating Voltage: USB Bus Power Supply ( 4.5 to 5.5V)