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This was bothering me, too! So I decided to take apart the battery that's in the jacket - risky because I only have one and didn't want to ruin it!

The battery has the code SNN5766A written on it which, as far as I can tell is also known as the BT50.

I have the down jacket that has the controller on the left forearm, speakers in the collar and bluetooth facility.

I hope that this helps someone.

Donations to a charity of your choice!! ;-)

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12y ago

What else can I help you with?