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Help With Wittnauer Electro-Chron Battery Replacement

mook

By mook
in Watch Repairs Help & Advice

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mook Member

mook

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Yeh. I'm nervous on this one because I don't have any specialty wrenches and I've heard there are two different types of cases on these. The first original type had hour and second increments on the dial, whereas the 2nd Gen you had to shrink the crystal. 2nd Gen had increments of hour, second, and half second.

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bobm12 Distinguished Member

bobm12

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All you need is the wrench for the back. Check ebay, they have some very inexpensive ones that will fit. After the back is out, all you need is read the number on the old battery and find the replacement accordingly. From there it is just a swap: old for new...like in the Aladin story but in reverse. :)

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ramrod Super WRT Addict

ramrod

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yeah - the dreaded ten sided case back, i happened to have been able to remove mine with a set of calipers. crazy i know, but it worked.

 

on another note: that is a great looking watch! did you just get it or is it a long time favorite?

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mook Member

mook

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The second generation doesn't have a removable back so you have to go in through the front but yours has a removable back as can be seen by the flats for a wrench on the back.

I see why you were a bit confused.

Mike

I was confused as I thought all 1st gens had the crazy hands. But if you look at the dial on mine it's a first gen style. This must be early first gen

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