The new revolution is here. MX Master - a precision instrument for masters of their craftHand-sculpted comfort contourThe perfectly sculpted, hand crafted shape* of this comfort mouse supports your hand and wrist in a comfortable, natural position.Experience fine-motion control and fluid experience with well-positioned buttons and wheels.* Mouse mold manufactured from an original hand sculpted design.Speed-adaptive scroll wheelScroll through long documents or web pages faster and easier. The precision wheel auto-shifts from click-to-click to hyper-fast scroll.Logitech Options™ software lets you customize this experience.Unique thumb wheelExperience side-to-side scrolling with a stroke of your thumb. To unlock the full range of thumb wheel possibilities, install Logitech Options™ software.Turn pages, switch applications, reassign buttons, and much more using Logitech Options software.Darkfield Laser TrackingDarkfield™ Laser Sensor tracks flawlessly virtually anywhere, even on glass* and high-gloss surfaces.*4 mm minimum thicknessDual connectivityConnect this performance mouse via included Logitech Unifying™ Receiver or via Bluetooth Smart wireless technology.Easy-Switch technologyPair up to 3 devices and easily switch between them with the touch of a button.Rechargeable batteryCharge quickly. You can get enough power for a full day of usage in 4 minutes only, with no down time while recharging. A full charge can last up to 40 days*.When the battery gets low, an indicator light lets you know. Recharging is fast and easy. Just plug MX Master into your computer using the micro-USB charging cable. Continue using your mouse while it charges.*Based on a 6 hour daily office use. Battery life may vary based on user and computing conditions.Unlock the possibilitiesInstall Logitech Options™ software to experience a full range of possibilities of this advanced mouse. Customize buttons and actions to your needs.Set up and assign tasks to buttons with step-by-step instructions and Setup Guide available to help answer your questions.