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 Clicker Material: ABS Remote Control Mode: Radio Frequency Technology Operating System:For Windows,for OS X,for Linux,for Android Wireless Frequency: 2.4ghz Remote Control Distance: 15 Meters Operating Voltage: 4.5-5.5V Battery: 1 x AAA Battery (not Included) Operating Voltage: 1.5V Sleeping Current: < 10uA. Package List: 1 x Presentation Clicker1 x Receiver1 x User Manual Note: Shipping without batteries.