Cateye velo 9 function cycle computertake your training to the next level with the velo 9 function cycle computer from cateye. This level 9 cycling computer features a battery life of up to 3 years, preprogramed tyre options and a bigger screen for better visibility. Along with current, average, and max speed measurement, track your trip distance, elapsed time, and odometer. Now featuring calorie consumption and a carbon offset measurement to help you track how much of a difference you are making.featurescurrent speed 0.0 4.0 199.9km h 0.0 3.0 ～124.9mphelapsed time 000'00 959'59trip distance 0.00 999.99km mileaverage speed 0.0 199.9km h 0.0 ～124.9mphmaximum speed 0.0 199.9km h 0.0 ～124.9mphcalorie consumption 0 99999 kcalcarbon offset 0.00 999.99kgtotal distance 0 99999km mileclock 000' 2359' 100' 1259'pace arrow yesauto power saving yesauto start stop yestyre size 16 18 20 22 24 26 700c or 100cm 299cm default26battery lithium battery cr2032x1battery life approx. 3 years 1hr use per day, may vary depending on the environment.size 55.5ｘ37.5ｘ18.5mmweight 28gbuy cateye accessories from chain reaction cycles, the world's largest online bike store.