Logitech MX ERGO PLUS Advanced Wireless Trackball Mouse, Black, (910-005178)

Pair up to 2 computers and easily switch between them, copy and paste text, images and files. Connect using the included Logitech® Unifying™ receiver or via Bluetooth®.
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.
Requires Logitech® Options™ software, available for download at logitech.com/options.
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.
Battery life will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product, and the product features used by the customer. As with all batteries, the maximum capacity of this battery will decrease with time and usage.