MAY 14 '98 11:24AM BULOVA CORP

Technical letter

 

SUBJECT: TUNING FORK ACCUTRON POWER CELLS

IT HAS COME TO OUR ATTENTION THAT SOME WATCH MATERIAL DISTRIBUTORS ARE PROMOTING THE USE OF ZINC-AIR TYPE POWER CELLS FOR USE IN TUNING FORK ACCUTRON WATCHES. WE DO NOT RECOMMEND THE USE OF THESE CELLS IN THESE WATCHES FOR THE FOLLOWING REASONS:

1. THE MANUFACTURERS OF THESE ZINC-AIR CELLS RECOMMEND AGAINST THEIR USE IN AN AIR SEALED SPACE (WATER RESISTANT WATCH CASES). AIR IS
A NECESSARY CATALYST IN THESE CELLS, HENCE THE NAME "ZINC-AIR".

2. THEIR USE IS RECOMMENDED FOR HIGH CURRENT DRAIN APPLICATIONS! WHERE THE CAPACITY OF THE CELL IS USED COMPLETELY WITHIN 2-3 MONTHS (i.e. HEARING AIDS). THIS OBVIOUSLY DOES NOT APPLY TO WATCHES.

3. BULOVA HAS NOT TESTED THESE CELLS FOR USE IN TUNING FORK ACCUTRONS, PRIMARILY FOR THE ABOVE REASONS.

ALTHOUGH BULOVA WOULD BEAR NO RESPONSBILITY FOR THE INCORRECT USE

OF THESE CELLS, WE FEEL IT IS IN YOUR BEST INTERESTS, NEITHER TO PROMOTE, NOR TO RECOMMEND, THE USE OF ZINC-AIR POWER CELLS IN WATCHES.

 
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