replace battery in 10476: DCA - Who Wants To Be A Millionaire (Phone)

Does anyone have any advice on what kind of battery & how to replace the battery in this pin (which of course states on the back "batteries are not replaceable", but is it really true???) I would looooove to get it working again. I have several pins that still light up, but I think it would be so cool to have one that makes a sound!

I think its a round watch battery..take it to a wal-mart or walgreens..and see if they can get the back off and replace the battery

Yep- I was hoping to hear from someone who may have had this pin, and may have already replaced the battery.

When you get the back off (did manage to accomplish that), the battery is still completely encased inside the plastic backing/battery pack/ noisemaking assembly. It is not visible at all. In a lot of the light-up pins you can actually see the battery, which then also gives you an idea of how to approach dis-assembly.

But this puppy is glued up tight all around, and it looks like in order to take it apart to get to the battery one would have to cut some of the wires. The wires are firmly embedded in the glue.

Oh well! any suggestions are welcome