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.
Tudor · 1926
Ref. M915600001
The Tudor 1926 Luna Stainless Steel / Champagne takes a 21 mm strap: measure between the lugs and that is the only number you need. We list 6 straps in that width. With a 39 mm case and 100 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.