Is there a reason.

I have quite a few Timex bought over the years, usually out of curiosity, like the Intelligent Quartz, a couple of Compass watches, a couple of Expeditions to see if they are tough and so on..

I picked a diver ( Yes 200m. screw down crown) to wear for a bit today......

I hope they are rare .   The point is since 2010 I have changed only ONE battery, they seem to go on for years.  This is true for for all the Timex I have.   It is noticeable amongst the other makes.

I know they often come with crown spacers to save the batteries, even so they are leagues ahead on battery life.

Any thoughts, ideas. 

Cheers