Instantly monitors your exercise distance by using set stride length. Unique technology allows you to carry the pedometer in your pocket or around your neck instead of the traditional method of clipping it to your belt. It's easy to use and a practical choice for those who want added safety while running, hiking, walking, or traveling. Should you ever be threatened, the easily triggered panic alarm may increase your ability to deter an assailant. The perfect travel companion for yourself or someone you love. Dimensions: 3.2 in x 1.3 in x .5 in.