Tutorial 6 min read
Omega Speedmaster watch strap guide
One black dial, four different directions. Explore suede, nylon, rubber and woven straps, starting with the 20 mm lugs of a specific Moonwatch reference.
Longines · HydroConquest
Ref. L37434562
The Longines Hydroconquest 41 Quartz Chronograph Stainless Steel / Black / Rubber takes a 21 mm strap: measure between the lugs and that is the only number you need. We list 6 straps in that width. Built for water, it wears naturally on rubber or a nylon NATO; a leather strap keeps it for dry days. With a 41 mm case and 300 m of water resistance, a strap of medium thickness keeps the balance. 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.