... Description:1.Remote technology 433.92MHz/315MHz2.PC connection USB connection No driver required3.remote control distance over 15m4. ... Max output : < 1mW ; < 5mW Receiver Operation system : Windows 98,Se,Me,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