Logitech MX Ergo Advanced Wireless Trackball/Mouse – Graphite” )

Adjustable 0??20? angle: customize the trackball angle of this ergonomic mouse from 0 to 20 degrees for a more natural, comfortable hand position that reduces muscle strain
Comfort: 20% less muscular fatigue than a regular Cordless computer mouse
Precision scroll-wheel: precise scrolling, horizontal scrolling, and other convenient controls with tilt and middle click wheel
Precision mode button: switch instantly between accuracy or speed mode tracking. Nominal value: 380 DPI. Minimal and maximize value: 512 DPI – 2048 DPI
Multi-device + multi-OS: move your cursor, files, and links across two screens ? even between Windows and Mac OS
Dual connectivity: up to two windows or Mac OS computers via included USB receiver or Bluetooth wireless technology, 10 meters wireless (USB receiver compatible with Windows 10 or later, Windows 8, Windows 7, Mac OS X 10.12 or later. Bluetooth wireless technology compatible with Windows 8 or later, Mac OS X 10.12 or later)
Usb-c charging Battery: up to 4 months on a full charge, 3 hours in 1 minute