Comfortable Right-handed Mouse: This wireless USB mouse features a hand-friendly contoured shape for all-day comfort, plus smooth, precise tracking and scrolling for easier navigation<br />Reliable Connection: Advanced 2.4 GHz wireless connection delivers the reliability and speed of a corded connection with wireless convenience and freedom up to 33 ft away (3), at home or at work<br />Extended Battery: Say goodbye to the hassle of charging cables and changing batteries and get up to 3 years of battery life for the keyboard and 18 months for the mouse with MK345<br />Compatibility: This keyboard mouse set works with PCs using Windows or Chrome operating systems; simply plug in to your laptop or desktop computer and begin using<br />Upgrade to Logitech MK540 Combo: For increased comfort try MK540 wireless keyboard and mouse combo, with scooped keys, a palm rest, a full-size mouse with soft rubber grips, and customizable shortcuts ">