Mechanics 8 min read
How an automatic watch works
Your wrist gives it energy. A spring saves it. A tiny balance sets the rhythm. Follow the journey inside an automatic watch, one pencil drawing at a time.
Vacheron Constantin · Égérie
Ref. 8005F/120RH002
The Vacheron Constantin Égérie Moonphase 37 Pink Gold - Diamond / Silver / Bracelet takes a 18 mm strap: measure between the lugs and that is the only number you need. We list 31 straps in that width. With a 37 mm case and 30 m of water resistance, a strap of medium thickness keeps the balance. Automatic movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
Width is a starting point. Check the case and end fittings before choosing.