The trackball includes a scroll wheel and backwards and forwards buttons for your browser. It is powered by a single AA battery, which Logitech said can provide up to 18 months of use off a single battery. The wireless tether is provided by the Logitech Unifying receiver on the 2.4GHz wavelength.
The Logitech Wireless Trackball M570 will ship later this month in Europe and the U.S., and is priced at US$59.99.
The Logitech Wireless Trackball M570