The Logitech Signature M650 Wireless Mouse offers all-day comfort and productivity. It features SmartWheel scrolling for precise or fast scrolling and a comfortable, contoured shape with a soft thumb area and rubber side grips. Choose the M650 for small-to-medium hands, the M650 L for large hands, or the M650 L Left for left-handed users. Upgrade your setup with this ergonomic and efficient wireless mouse.