Tutorial
How to change a watch strap
Quick release with your thumb, a spring bar tool for classic straps, or a one-piece strap threaded under the bars: three ways to swap a strap in a minute without a scratch.
· 4 min read
Longines · Master Collection
Ref. L27184507
The Longines Master Collection 42 24h Stainless Steel / Black-Roman / Alligator takes a 21 mm strap: measure between the lugs and that is the only number you need. We list 216 straps in that width. A dress watch by proportion: a slim leather strap, plain or lightly stitched, keeps the line clean. With a 42 mm case and 30 m of water resistance, a thicker strap balances the case. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
We do not sell watches. This page exists to find the straps that fit this one.