The Pro Fit mouse has an ergonomic design and is wireless to save desktop space. Perfect for traveling, the mid-size mouse in black has a compact design for easy packing in your bag. Ergonomic right-handed design. 2.4 GHz wireless for long range with minimal interference. Compact size for travel convenience. Clutter-free wireless technology and storable nano receiver. Scroll wheel with middle button and pointer speed quick-select Right-handed comfort. The ergonomic, right-handed design with a high-definition optical sensor offers precise and responsive control. Provides users with clutter-free productivity for an office environment. Compliments mobile laptop usage for travel with a storable nano receiver. Manufacturer limited lifetime warranty.