How to use:
\n\n1、If the speed and cadence use together,need buy two pcs
\n\n2、In speed model,use the app need set the wheel set size then can exact display speed
\n\n3、First use the equipment,need remove the Insulating paper make sure the battery + up
\n\n4、Reinstall battery can switching mode speed modeltocadence modelorcadence model tospeed model