Is it mechanical or battery powered?

I destroy small electrical objects by being around them for any real period of time... I just had a digital watch that I never once wore die in my sporran from just being to close to me. I knew something was terribly wrong with the little blighter when it tried to tell me that it was 72:00 o' clock. Timex no less.

I think I need a wind up watch, which seems to be a rare beast now.