... PC laser pointer for teacher CE, ROHS RC laser pointer,usb laser pointer,wireless laser pointer description: Product name: Rc laser ... up and down ,blank screen ,power on/off ,built in flash memory optional(64MB-16GB).Control distance:15m.Laser distance:200m ... *3.8*2.5cmBattery:AAA*1pcsUSB plug and play ,no drive required .Operating system:Windows98,Se,Me,2000,XP ,MacOS,Linux ...