1pc speedometer bicycle computer with lcd digital display waterproof bicycle odometer speedometer riding satch riding access

specification color: black + red. size (computer console): 46 x 46 x 19mm size (lcd display): 3 x 2.5 cm sensor cable length (approx.): 84cm 2-layer lcd display compact and slim design convenient, compact, portable and convenient time display features can be used as a gadget for watch travel, easy to install, easy to read lcd display, is the ideal companion for bicycles to effectively help you track progress and improve endurance 1 x (1.5v / ag13a)