The ergonomic design for right-handed users allows for comfortable work - even for hours on end. With four color options available, this mouse adds a splash of color to the workday. The Pro Fit wireless mid-size mouse is highly durable and suitable for both stationary and mobile use. Its 2.4GHz nano receiver is ideal for cramped office environments. The receiver is so small that it can remain plugged in but can also be stored in the integrated storage compartment of the Pro Fit mouse. The Pro Fit wireless mid-size mouse is large enough to fit comfortably in your hand yet small enough to easily fit in a laptop or travel bag. Wherever you go, the highly sensitive optical sensor provides precise, reliable cursor control on almost any surface. The mouse comes with two AAA batteries that have a lifespan of 12 months.