Could have been a disaster if not found in time. .But I think if the cable moves slightly away from the connectors it may short to the metal back of the watch case. When this happens, the cable overheats so much that the plastic melts and the watch goes into an overheated state. .Look at the photos. I'm not sure if the included Fitbit cable allows for the same situation, but if it does, it looks like a SERIOUS design security flaw.
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