... .Battery 1 pcs inside,can be changed with new battery when power off 3.Moden design,has back cli TP1037Single function pedometerMaterial ... .45x6.65x2.2cm1.Step counter 99999 steps2.Controled by ON/OFF switch3.Battery 1 pcs inside,can be changed with new ... battery when power off4.Moden design,has back clip,easy and convenient ...