Logitech MX Ergo Plus Advanced Wireless Trackball

Smart adjustable hinge plus extra 10? wedge for customized hand position and greater comfort. Choose the best angle for you 0?, 20? or 30?. Advanced tracking. Precision mode button lets you instantly switch between speed and high precision tracking. Precision scroll-wheel with tilt and middle click allows for precise scrolling and convenient controls. Easy-Switch? and FLOW-enabled for effortless multi-computer workflow. Pair up to 2 computers and easily switch between them, copy and paste text, images and files. Fast rechargeable battery. Holds power for up to 4 months on a full charge. Quick charge: 1 minute of charge gives up to a day of use.