Key Specifications/Special Features:

2.4GHz ISM band radio frequency
8 channels with 4,096 IDs per channel avoids interference
Operating distance up to 30 feet (10m)
Patented optical trackball
Advanced power saving management
Error detection ability
Mouse left and right keys
Built-in laser pointer
Pencil, eraser and black screen keys
LED indicator
Windows Me/2000/XP compatible
MAC OS X 10.2 and above
CE and FCC approvals
Dimensions (L x W x H): 127 x 50 x 42mm