A serious upgrade for anyone ready to ditch the standard mouse!The Logitech MX Ergo Plus is a wireless trackball mouse in dark gray, built from plastic, rubber, and metal. It comes with the original retail box and documentation, so you get everything you need right out of the box.Features:* Gray trackball positioned on the thumb side
* Adjustable hinge base for 0 to 20 degree tilt
* Included wedge accessory for a 30 degree tilt angle -Easy on the wrist.
* Scroll wheel, precision mode button, and Easy-Switch device toggle buttons (labeled 1 and 2) on top
* FLOW-enabled with fast rechargeable battery
* Compatible with Windows/Mac
* Logi branding on mouse body and extra wedgeCondition: Pre-owned, very good condition. The original box has some creasing and wear on the top flap but is otherwise intact.Note-USB Receiver is not included; however, this mouse also connects directly through Bluetooth if your computer supports it. Part, Logitech Unifying USB Receiver, averages $15