The Logitech Signature M650 enhances your everyday workflow with SmartWheel scrolling, letting you switch effortlessly between precise and fast scrolling. Designed for all-day comfort, it features a contoured shape, soft thumb area, and rubber side grips—and comes in two sizes (*M650 for Small-to-Medium hands, and M650 L for Large-Sized Hands) to fit your hand just right. SilentTouch technology reduces click noise by 90%, creating a quieter workspace. Connect easily via Bluetooth® or Logi Bolt USB, and enjoy compatibility across Windows, macOS, Linux®, iPadOS, Android™, and Chromebook™. Customize button functions and check battery life using the Logi Options+ app. With up to 24 months of battery life on a single AA battery and a sustainable design, the M650 is built for focus, comfort, and everyday productivity. Specifications: Dimensions (M650 L): H118.7 x W66.2 x D42 mm 115.4g Sensor Technology: Logitech Advanced Optical Tracking Nominal value: 400 DPI Max value: Up to 4000 Buttons: No. of Buttons: 5 (Left/Right-click, Back/Forward, Scroll-wheel with middle click) Customization App: Supported by Logi Options+ on Windows and macOS Battery: Battery type: 1 x AA battery (included) Battery life with Logi Bolt USB Receiver: up to 24-months Battery life with Bluetooth: up to 20- months Connection Type: Logi Bolt USB Receiver Bluetooth Low Energy Technology Wireless range: 10 m wireless range