Features: 1.2.4GHZ WIRELESS CONNECTION: The presentation remote pen uses 2.4Ghz wireless technology to remotely control presentations within Approx. 15meter/49.2ft. 2.MULTIFUNCTIONAL: Comprehensive slide show functions, including forward, back, pause, start and black screen and full screen functions. 3.ERGONOMIC DESIGN: Presenter remote adopts curved design, which is ergonomic and won't make you sore when holding it for a long time. 4.PLUG AND PLAY: USB presentation clicker supports plug and play, no software required, very convenient and fast. 5.WIDELY USED: Wireless PPT remote is a practical tool for teachers and workers to present slides in presentations, meetings or classrooms. specification:Item Type: Presentation Clicker Material: ABS Model: AMP16AP Size: Approx. 10.8 x 4.1 x 2.5cm / 4.3 x 1.6 x 1.0in Remote Control Technology: 2.4G Control Distance: Maximum Approx. 15meter / 49.2ft Compatible Interface: USB Port Maximum Output: