Unique thumb wheel: for horizontal navigation and advanced gesturesEasy connections for multiple computers: use with up to three Windows or Mac computers via included Unifying receiver or Bluetooth smart wireless technologyEasy switching between computers with the touch of the buttonTracks virtually anywhere - even on glass: the dark field 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
![Bamboo Cutting Boards for Kitchen [Set of 3] Wood Cutting Board for Chopping Meat, Vegetables, Fruits, Cheese, Knife Friendly Serving Tray with Handles](https://m.media-amazon.com/images/I/41aAMfBj8zL._SL500_.jpg "Bamboo Cutting Boards for Kitchen [Set of 3] Wood Cutting Board for Chopping Meat, Vegetables, Fruits, Cheese, Knife Friendly Serving Tray with Handles")
