1-1 of 1 Answer
@Tyrone, 4 1/2 hours is the time required for charging the empty battery to its full capacity, most likely the headset had a few remaining battery left. Please refer to this link for the guidelines and proper steps for charging: https://helpguide.sony.net/mdr/whch510/v1/en/contents/TP0002402883.html -Sam
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