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.
Girard-Perregaux · Vintage 1945
Ref. 2588221223BF6A
The Girard-Perregaux Vintage 1945 XXL Large Date and Moonphases Titanium DLC / Grey Sapphire takes a 24 mm strap: measure between the lugs and that is the only number you need. We list 18 straps in that width. With a 36.1 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.