... Description:1.Remote technology 433.92MHz/315MHz2.PC connection USB connection No driver required3.remote control distance over 15m4.suitable for ... Color: black/silver/blueFunction: 1,laser pointer; 2,page up/down; 3, built-in memory optional4, play slide5, ... 2000,XP, Mac OS, Linux USB Version : USB 1.1,compatible USB 2.0 Working voltage : 4.5-5.5V Presentation Laser Pointer with USB connection