Going on day 5....from tech support see below....terrible customer service It sounds like your device may be in what is referred as a state of "brick." If the wristband can’t be located, you may have to completely drain the battery battery It may take full 3 days for the battery to drain completely. After 3 days, place the wristband briefly on the charger and try to connect it to the Biostrap app. If the wristband still can’t be connected or located, it is possible that battery may not be completely drained. Wait for one more day (without charging) and try again. If the wristband still can't connect, this would mean the sensor has gone bad. In that case, we'll issue a replacement device after those steps have been followed.