If you’re using your computer all day and night, the Logitech Cordless Optical TrackMan is designed to give you a premium level of comfort and cordless freedom. The exceptionally comfortable ergonomic design provides unmatched palm support—even after extended use. Sculpted shape, soft-touch surface support your hand more than ever before. Logitech’s cordless technology helps eliminate cable clutter. And with eight buttons – including Forward, Back, Cruise Control and Drag-lock buttons—you’ll enjoy one-touch access to common tasks and activities. Fingertip-based control enables fast, accurate cursor movements. And the Patented Marble optical technology ensures smooth tracking.