Welcome to the store! 1. [Ergonomic Design] Unique curved design, the wireless presentation remote control conforms to ergonomics, so it won't hurt when held for a long time. 2. [Wireless Connection] Using 2.4Ghz wireless technology, the presentation pen can remotely control the demonstration within about 10 meters. 3. [Multi-function] Comprehensive slide presentation functions, including forward, backward, pause, start, and black screen functions. 4. [Wide Application] This wireless presentation remote control is a practical tool for teachers and workers to present PowerPoint for speeches, meetings, or classes. 5. [Widely Compatible] This presentation clicker is suitable for Win 98, for Win se, for Win me, for Win 2000, for vista, for OS X, for Linux. Item Type: Presentation Clicker Material: Plastic Control Distance: Up to 10m (Approx. 10m / 10.9yd) Adapter Battery: 1 AAA battery (delivery without battery) Compatible Interface: USB 1.0 / USB 2.0 Uses: Conferences, Lectures, etc. Compatible System: For Win 98, for Win se, for Win me, for Win 2000, for Win xp, for vista, for OS X, for Linux 1 x Presentation Clicker 1 x Wireless Receiver 1 x User Manual