CATEYE CC-RD310W STRADA SLIM WIRELESS BLACKAll of the same great features as the Strada Wireless computer in a thinner, lighter design that incorporates a 35% larger screen and display Slim profile sensor lays flat against fork leg for a streamlined approach that is nearly 50% thinner than previous sensors Functions include average max current speed, total distance, trip distance, clock, and pace arrow 8 functions including wireless speed transmission Designed specifically for road bike use