Simply put, you might not be wearing it enough active hours of the day to keep it properly wound. If it is a mechanical watch, then probably it is time to give it a good bath! A high-quality automatic mechanical watch is fairly accurate. Try winding it, then wear it all day every day for a week and you shouldn't need to wind it again. Like that paperclip, small metal parts in a watch movement may become magnetized. Automatic watches need to be wound to start, either through manual winding at the crown or by wearing it long enough to wind the mainspring. If you rest your watch on a stereo speaker with a large magnet inside of it or even an iPhone, the magnetic fields can transfer to the parts of a movement. Why does my automatic watch keep losing time? Watches usually start gaining or losing many seconds or minutes a day when the balance is magnetized. Another way to keep your automatic watch fully wound is by using a winder. There will be a different answer for each watch. The date change kicks in 1.30am and does not complete until 6am. Regularly worn, most automatic watches function normally and can run for roughly 36 hours after being removed. Losing time is usually considered as the worse scenario as this will get you late all the time and you don’t want that. With growth of the internet in the late 90s watches as an interest turned into an obsession. however, it starts losing time dramatically when it has a few hours left in the power reserve, like about 3-5s per hour. Mechanical watches, including automatic varieties, can lose or gain as much as two seconds of time a day and as little as one second of time per week. ghce Jan 23, 2020. So let’s deal with one watch at a time, rather than “some” of my watches. Since that time he has been a watch forum moderator, watch reviewer, contributor to Nerdist, and operates Watches in Movies in his spare time. the watch was recently serviced, like two weeks ago. A watch is wound via its crown, usually clockwise. Residing in North Idaho, James has been wearing a watch for over 35 years. If your watch has a screw-down crown, you first need to unscrew the crown before winding. The recommendation is to lay the watch flat for a few hours so that the dial is put uppermost. There is no one size fits all answer. Basically there is a small weight inside the watch that sounds around and winds the watch as you walk and move around. Does it need repair or adjustment? Hi Cory, I have a watch that is very accurate (+1s per day) in the first two days after it has been fully wound. Each mechanical watch is different, and you will quickly get to know how accurate your watch is. Automatic watch winders, does your watch lose or gain time in them? During this time the watch will lose approx - 20mins. It isn't losing time it is stopping which is normal! Keep the crown in its pushed-in position and wind the crown clockwise. 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