Only on the late 76/77 218 or 219 "MK5's" that have the 3 position crown is this feature
available... With the crown in, the day quick-set works, halfway out is the "hack"
position and all the way out is "power-saver", IE power off (no hum) for storage, etc.
I have several 219's with this but don't think any 218's are here so I'm not at all sure
it was actually available with them. :confused1:
If you pull the crown and the watch is still humming, the load on the battery is very
slightly reduced however the watch is, for all practical purposes, still functioning...
I think the current Bulova line products have the 3 position crown, at least my
Claremont Precisioneist, 96B129 was shipped with a spacer inserted in between the
case and the backside of the crown to enable the battery to be placed in the watch
and shipped without having to open the watch and performing that task at the point
of sale like the early Accutrons...
