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Discussion Starter · #1 ·
Hello, and I hope I am not breaking any forum rules by asking this question here...

I have a benrus electronic watch series #1345 that was purchased used and without a battery... I've been trying to find out WHAT BATTERY this takes. Any suggestions would be greatly appreciated!
 

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Discussion Starter · #3 ·
Thanks so much for the reply! I only know the series # because it's printed on the back... and I can't access the movement because this model is opened through the crystal and I don't have a tool to do that. (I saw an earlier post by "skypilot" back in 2009 who noted it was one of the first waterproof watches due to this feature). It's called a Benrus Electronic "Technipower". I've tried a 301, 344, and 389, to no avail. Maybe just non functional, but I just wanted to be sure it was not an issue of one of those watches that has a special plastic sleeve or something. I appreciate you providing feedback, and if there are any further ideas I would welcome them.
 

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Actually, if you go back and look, skypilot's remark was that the watch was the first one
by an American watch manufacturer to be constructed in such a way.
 

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If it didn't start up with the new 344 battery installed then the movement is likely dead. Many, if not most, of the Technipower watches used the ESA 9154 movement and while they are fairly reliable, they did have their issues. Perhaps someone here can recommend a repair shop for these watches? I checked my 3 electronic watches and two of them have an ESA 9154. One had a 344 battery and the other has a 386 and both run / keep time. The other has a PUV 907 that uses a 303 battery.
 
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