..I opened my 5030 to regulate it as 0.4 sec/day were too much and take a shot, this is the first time I see this module.

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The white cover is very hard plastic with a small hole for the piezo contact (fortunately I didn't damage it but I was quite worried. The same white plastic appears to surround the entire module.

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This is a 3229, the cover is soft rubber, but bigger hole for the contact, and it appears there movement is escased in a metal ring.

I hope the screw on the left top "corner" of the module is the trimmer regulatur, for the rest the movements appear to be more or less the same besides the battery retention.