Logitech Cordless Mini Optical Mouse is a simple elegant design. The communication uses a USB mini-receiver to speak between mouse and PC. The USB receiver also has a storage space underneath the optical mouse which makes this ideal for travel. An advanced tilt-wheel moves in all axis to provide side-to-side control and zoom control.
The Logitech mouse runs off one AA battery with a small LED to indicate low battery levels. Plug-n-play with a 3 year warranty, probably the best travel mouse we’ve seen. Price runs about $25.