I got a love hate relationship with this watch, its big heavy and for the most part once set and key is as instructions say first use after it being dead wind it about 30 seconds before wearing, if you do that and wear it every day for about 12 hours its perfect. If you don't wind after dead and before wearing you can just set it and it will still keep perfect time only it may stop when not in use after 6-8 hours instead of 12-16. Even with pre winding it and wearing 16 hours a day it will only last about 36 hours max if not wore again. If you do wear it daily you never need to do anything. If it would hold charge for over a weekend 48-60 without being worn it would be perfect. Still I get lots of compliments on the looks and it looks more expensive then it cost. Of course if you have an auto winder it would never stop.