Logitech ERGO M575S Wireless Trackball Mouse, Wireless Ergonomic Mouse With Bluetooth and Encrypted Dongle, Comfortable Thumb Control, Precise and Smooth Tracking, for PC/Mac (Black+Blue Ball) - Optical - Wireless - 32.81 ft - Bluetooth - 2.40 GHz - Black

Work in your comfort zone with Ergo M575S wireless trackball, developed by Logi Ergo Lab experts, user-tested and certified by ergonomists for 25% less muscle strain in your forearm (1). Move your cursor with smooth and precise thumb control, on a sculpted ergonomic design that keeps your hand relaxed and forearm in a more natural posture. It also tracks on most surfaces, and since it doesn't need to be moved - ERGO M575S is perfect for tight setups and busy desks. Now with quiet clicks.

Connect in no time via Bluetooth or the included Logi Bolt Receiver, and enjoy hours of comfort with up to 18-month battery life.(3)

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