The Expert Mouse Wireless Trackball gives you the freedom to be hyper-productive without being limited by a USB cable. The trackball can be paired through Bluetooth 4.0 LE to save a valuable USB port, or connected via USB nano receiver. TrackballWorks software offers incredible customization, and optical tracking technology offers smooth, precise cursor control. Plus, Kensington's award-winning Scroll Ring lets you quickly scan up and down web pages or long documents.

	Dual Wireless Technology The ultimate in wireless freedom, allowing you to connect either via Bluetooth® 4.0 LE that allows you to save a valuable USB port or through a highly reliable 2.4GHz USB nano receiver
	DiamondEye Optical Tracking Movement detection technology provides smooth, precise cursor control so you can get where you want on the screen quickly with less hand movement, improving productivity and efficiency
	Scroll Ring and Large Ball Spin the dial to move up and down web pages or documents with complete ease. The red ball has been specially designed with an absolute spherical, hard surface for precise tracking and control.