Hi Chris
There were three types of watch in my experiance...
LCD... battery
Analogue... battery
Analogue... spring driven clockwork
As far as I can judge, there were no differences in the activity surrounding
each type.
Best Regards & 73s... Dave Cushman, G8MZY
Beekeeping & Bee Breeding Website...
http://website.lineone.net/~dave.cushman