If they hadn't been found in time, there could have been a disaster. If the cable is slightly loose from the connectors, it may cause a short circuit with the metal back of the watch case. In this case, the cable overheats so much that the plastic melts and the watch overheats. Pictures. I'm not sure if the included Fitbit cable allows for the same situation, but if it does then it looks like a HUGE design security flaw.
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