Mechanical is the world's oldest type of watch movement, but some clever clogs figured out how to make them automatic. So now, we have the best of both worlds – the history and charm of a mechanical watch and the modern comfort of not having to wind it several times a day.
But because it's powered by movement, the watch's accuracy can be affected by its surroundings.
A good rule of thumb to ensure accuracy is to wind it fully every day at the same time – even when you're not wearing it – to keep the movement running.
The watch's accuracy can still be affected by temperature, magnetism, shock, or orientation Temperature
If your watch is exposed to high temperatures, it may run slower than usual as the heat can affect the tension of the springs running the movement. If it's exposed to low or freezing temperatures, it might run faster. Your watch should run accurately if kept between 40–95°F (5–35°C).
If you expose your watch to varying temperatures during the day (f.ex. you take a walk on a winter morning and then go back inside), the movement might run fast while outside but should go back to normal when inside again. Some people experience that winter temperatures affect the watch by +/-5 secs per day, while summer warmth gives a max of +10 secs per day.Magnetism
Magnetism is everywhere. While it poses no real threat to you, it can affect the finely tuned mechanical movement inside your watch. Magnetism can destabilize the oscillation of force between the mainspring and the hairspring, causing the watch to gain or lose time.
Keeping your watch more than 2" (5 cm) away from magnetic products like phones, computers, AC adaptors, etc., should prevent them from influencing the movement of your timepiece.
If you suspect your watch may be magnetized, take it to a watchmaker for demagnetization.Shock
Of course, you don't take your watch off to play peek-a-boo, but dropping it or bumping it into hard things can break an axle. It can also slightly deform the springs, setting the forces out of balance, making it run slightly too fast or too slow.
The best way to avoid it: take the watch off before going "Hulk Smash!" in the gym.Placement
If you believe in gravity, you may want to think about how you store your watch. If you e.g. keep it on its side, its accuracy may be affected. Fully winding it each morning should make up for the gravitational effect of the night before. If you're not going to wear your watch for a few days, lay it flat on its back. Better yet, store it in the box it came in or a nice watch box (that we also happen to sell).
If your automatic mechanical watch is running too fast or too slow, it may simply be a case of adjusting the tension of the hairspring. Take it to your local watchmaker for a quick fix. If that doesn't help, they'll be able to diagnose the problem further.
If you have questions feel free to contact us either by mail, phone or use our contact form