Logitech Signature M650 L for Business - Mouse - right-handed - 5 buttons - wireless - Bluetooth, 2.4 GHz - Logitech Logi Bolt USB receiver - graphite. The Signature M650 L for Business is an easy-to-deploy mouse that improves productivity 50% vs laptop touchpads. Bluetooth Low Energy Security Mode, Level 4 protection when paired with a Logi Bolt USB receiver. Or connect via Bluetooth Low Energy when cross-platform flexibility matters. Get line-by-line precision for documents - and super-fast scrolling for long web pages. Switch modes with a flick of the SmartWheel. It's also 90% less "clicky" thanks to SilentTouch technology. In two sizes for small or large hands, and a contoured shape and soft thumb area for comfort.