Tag Heuer Alter Ego Battery Replacement

I have in my hands a Tag heuer Alter Ego for Battery Replacement.The back case closed with Screws.
With a small screwdriver open the case.The secret is to clean very good the case and the o ring.The same you can do with the crown.
Clean and the replace with the now battery.And you are ready.
Please Enjoy
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  1. Hello,

    Can you tell me the exact size screwdriver I need for the Tag Alter Ego? I’ve tried a 1.0 and a 1.4, and I managed to get one screw turning, but not the rest. Neither size drive seems to be an exact fit.


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