Specification:
Tracking System: Optical
Frequency: 2405MHz-2476MHz
Effective Distance: 32.8 ft
Working Voltage/Current: 3.7V/3mA
Battery Capacity: 800mA
Product Weight: 0.29 lb
Button Life: 5 million times
Roller Life: 1.2 million turn
Resolution: 1000-1600-2400DPI