Features: 1.Smart Power Saving: Wireless presenter remote has smart power saving function, long use time and durable. 2.Strong Practicability: The presentation clicker has a long service life, and the button life is up to 100,000 times. 3.Easy to Operate: 2.4G wireless presenter remote can complete all operations with one hand, easy to use. 4.Fast Transmission Speed: Spiral gauge sensor, 2.4G high speed transmission, 360 degrees freely. 5.Wide Application: Wireless presenter is suitable for computers, TVs, projectors, notebooks, TV sticks, set top boxes, tablets, etc. specification:Item Type: Remote Air Mouse Material:Plastic Product Model: UKB-521 Product Size: Approx. 132mm / 5.2in Approx. 40mm / 1.6in Approx. 22mm / 0.9in Remote Control Distance: 10 Meters Sensor: 6 Axis Working Voltage: 3V Adapter Battery: 2 x AAA Batteries (Delivered Without Batteries) Compatible Interface: USB 1.0,2.0,3.0 Operating System: For Windows98,for Windows2000 XP Vista,for Win7,for Win8,for OS X,for Linux,for Android Function: For Multimedia Control PackageList:1 x RemoteAirMouse 1 x Receiver 1 x User Manual NoteShip without battery.