Features: 33-foot (10-meter) range and no line of sight required with RF & wireless technology Compatible with most presentation applications Package Includes: RF Remote Control and USB RF Receiver Hardware Requirements: RF Remote Control and USB RF Receiver Software Requirements: Windows® 98, Me, 2000 and XP Macintosh: Mac OS 8.6 Specifications: Buttons: 3 Cordless: Yes Interface: USB Optical/Ball/Trackball: Optical Wheel: No Color: Silver pmEZ718$69.08Color: BlackSilver Ground shipping on all parts only 6.99! © 2004 comtecpc.com, All rights reserved.