EH0239B Features Multifunctional laser mouse Can Function as a mouse， keyboard， IR remote control or laser pen 2.4GHZ radio frequency 2 minute automatic sleep time Convenient to use General Specs Brand & Model Measy RC10 Color Black Radio Frequency 2.4GHz Power Source 3v Battery Type 2 x AA battery RC current 20mA Signature Transmission Mode 2.4G RF Laser Head Current 20mA Output Power 2.5-5.0 nW Light Point (at 10-meter distance) 12 x 12mm System Required Windows XP / Vista / 7 / MAC / Linux / Android Package Details Weight: 99.51 g Size: 12.5*6.2*3.5 cm Package Includes * Measy RC10 2.4GHz Multifunctional Laser Air Mouse