KEYSPAN PR-PRO3 Presentation Remote Pro Type: 2.4 GHz Wireless Power Supply: 2 x AAA Batteries Distance: 100 feet Receiver Interface: USB Laser Pointer Supported: Yes Color: Black Weight: 0.35 System Requirement: Windows: An available USB port Windows 98SE/Me/2000/XP/Vista/Windows 7 Macintosh: An available USB port Mac OS 9.1 or later, Mac OS X (10.1.5 or later), Mac OS X (10.6.2) Requires Mac OS X (10.3 or later) for volume control
