VDO M2 Wireless Extra Durable LARGE digits on the display multiple functions Automatic start-stop Bike Cycling Computers Simplicity in perfection with Easiest computer to install and to use in the industry Two buttons and a large display with Big characters, easy to read and Focuses on the key bike functions Extra durable and long lasting with multi functions and Focuses on the key bike functions Auto start stop to save batteries and Computer low battery warning and great for Cyclo Cross Data storage during battery change (data + settings)