High-precision Sensor, Speed-adaptive Scroll Wheel, Thumb Scroll Wheel, Easy-Switch up to 3 Devices

• Unique thumb wheel: For horizontal navigation and advanced gestures
• Easy connections for multiple computers: Use with up to three Windows or Mac computers via included Unifying receiver or Bluetooth Smart wireless technology
• Easy switching between computers with the touch of the button
• Tracks virtually anywhere – even on glass: The Dark field Laser sensor tracks flawlessly even on glass and high-gloss surfaces (4mm minimum thickness)
• Advanced power management: Up to 40 days of power on single charge. You can get enough power for a full day of usage in only 4 minutes, with no downtime while recharging. ( Battery life may vary based on user and computer conditions)