The Microsoft Sculpt Ergonomic mouse is designed for comfort and all day use and per Microsoft has the following features.
– The shape of the mouse is designed to maximize wrist comfort
– Thumb scoop helps maintain the correct ergonomic hand and wrist position
– 4-way scroll wheel for navigating up, down, left and right
– Windows Button for one-touch access to the Start screen
– Back button for faster navigation
– Up to 12 month battery life
– Works on virtually any surface with BlueTrack Technology