Ergonomic wireless mouse that fits the palm of the hand perfectly. Great wrist support for long hours of working/gaming. The mouse has 3 DPI settings (800/1200/1600) for all sensitivity requirements. The built-in 400mAh rechargable li-on battery provides up to 20 hours of use with LED ON. When decorated with laser engraving the logo will light up and shine. LED colour changes randomly.