With an easy thumb control, this wireless mouse is engineered to reduce hand movement, keeping the hand and arm relaxed and providing hours of comfort. The ergonomic design allows the ERGO M575 to naturally fit a large range of hand sizes. Plus, it’s perfect for tight spaces, busy desks, and most surfaces. Two connection options: Bluetooth Low Energy wireless technology or Logi Bolt. Uses a micro-USB receiver. 2-year limited warranty. Black.