Keep a record of where youve been, how far & how fast youve travelled with this advanced mini-computer! Its a great way to motivate & challenge yourself, & stay healthy. Just one button accesses 15 functions, showing speed, distance, time, average speed, max speed (and more) on a clear LCD display. So easy to fit & use, with a water-resistant casing & energy-saving on/off switch. Simply attach to your handlebars & peddle away! W4 x L4cm.