1. [Ergonomic Design] Unique curved design, the wireless presenter remote conforms to ergonomics, so it will not be sore when held for a long time.2. [Wireless Connection] Using 2.4Ghz wireless technology, the presentation remote pen can remotely control the demonstration at about 10 meters.3. [Multi Functions] Comprehensive slide presentation functions, including forward, return, pause, start and black screen functions4. [Wide Application] This wireless presenter remote is a practical tool for teacher and worker to present for speech, meeting or class.5. [Widely Compatible] This presentation clicker is suitable for Win 98,for Win se, for Win me, for Win 2000, for vista, for OS XItem Type: Presentation ClickerControl Distance: Up to 10m(Approx. 10m / 10.9ys)Adapter Battery: 1 AAA Battery (Delivery Without Battery)Compatible Interface: USB 1.0 / USB 2.0Uses: Conferences, Lectures, etc.Compatible System: For Win 98,for Win se, for Win me, for Win 2000, for Win xp, for vista, for OS XColour:blackMaterial:plasticPackage Contents:2 x Presentation Clicker2 x Wireless ReceiverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.