Weve designed a mouse that not only fits your hand but also your style sensibilities. The ergonomic right-handed design provides hours of comfort and with four colors to choose from its easy on the eyes too. The Pro Fit Mid-Size Wireless Mouse is built to deliver years of service backed by a limited lifetime warranty. Perfect for desktop and mobile users alike the Pro Fit Mid-Size Wireless Mouse has a nano receiver that operates 2.4 GHz to reduce interference in crowded office environments. The receiver is so small you can leave it in your computer or slide it in the Pro Fits built-in receiver storage compartment. The Pro Fit Mid-Size Wireless Mouse is big enough to feel just right in your hand yet small enough to pack easily in your travel bag. And no matter where your work takes you the high-definition optical sensor delivers precise responsive cursor control on a variety of surfaces. And it operates for up to 12 months on 2 AAA batteries included.- Compact size for travel convenience- Clutter-free wireless technology and storable nano receiver- Ergonomic right-handed design fits your hand perfectly- 2.4 GHz wireless for long range with minimal interference- Scroll wheel with middle button and pointer speed quick-select- High-definition optical sensor (1750 DPI) for responsive control- Extended battery life up to 12 months- Built to last with a limited lifetime warranty- 2 AAA batteries included