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

  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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