The light should not be blinking the whole time after the strap is undone. I've seen mine continue to blink for an extended period of time after unsnapping it from the chest strap when the sender unit is very moist from sweat. After drying the sender it turns off very quickly. My guess is that the sweat is creating a complete enough circuit to keep the unit turned on. If the unit is "stuck on" 24/7 if will certainly drain the battery quickly.

Hugh

---

Genetics load the gun, lifestyle pulls the trigger.

Thanks