Mechanics 3 min read
The simple science of quartz watches
Learn how a battery, a tiny crystal and a simple circuit work together to keep your quartz watch running with highly reliable accuracy every day.
Longines · PrimaLuna
Ref. L81154916
The Longines PrimaLuna 30.5 Quartz Moonphase Stainless Steel / Blue - Roman / Bracelet takes a 8 mm strap: measure between the lugs and that is the only number you need. We list 1 straps in that width. A dress watch by proportion: a slim leather strap, plain or lightly stitched, keeps the line clean. With a 30.5 mm case and 30 m of water resistance, a strap of medium thickness keeps the balance. Quartz 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.