Accurate enough to do the things for which you normally use a button compass on your keychain. That's the honest answer. My button compass on my keychain is looking like roadkill.

I thought if I could wear one on my wrist, rather than carry it on my keychain, it might last longer and make my keychain lighter in the process.

That's my logic and I'm sticking to it. <img src="/images/graemlins/smile.gif" alt="" />

-- Craig