Feature:1. Remote Control: Presentation clicker adopts 2.4GHz wireless technology, which can remotely control the presentation at a distance of about 15 meters.2. Wide Compatibility: Presentation clicker can be compatible with for Windows 98, Se, Me, 2000, XP, Vista,for OS X,for Linux and other systems, and all text documents can be used in a compatible way.3. Ergonomic Design: PPT presentation clicker adopts a unique curved design, so it won't feel sore when you hold it for a long time, making it comfortable to hold and easy to grasp.4. Presentation Control: Handheld presenter has comprehensive slide control functions, including forward, back, start, pause and black screen.5. Compact Portable: The 2.4GHz remote clicker is compact in structure and small in size, so it is convenient to carry in a bag when going out.Specification:Item Type: Presentation ClickerMaterial: ABSRemote Control Mode: Radio Frequency TechnologyOperating System:For Windows,for OS X,for Linux,for AndroidWireless Frequency: 2.4ghzRemote Control Distance: 15 MetersOperating Voltage: 4.5-5.5VBattery: 1 x AAA Battery (not Included)Operating Voltage: 1.5VSleeping Current: andlt 10uA.Package List:1 x Presentation Clicker1 x Receiver1 x User ManualNote:Shipping without batteries.