Strap for Conquest 34 Quartz Moonphase Stainless Steel / Blue / Bracelet

The lug width of the Longines Conquest L3.381.4.97.6 is 17 mm. This measurement represents the internal distance between the two spring bars that attach the strap to the case lugs. Verifying this specification is essential before purchasing an aftermarket strap to ensure proper fit and secure mounting.

For the 34 mm Conquest L3.381.4.97.6, alligator leather is the reference choice, offering natural texture and the ability to develop a noble patina over time. Vegetable-tanned calf provides more uniform ageing and softer feel. Shell cordovan delivers maximum durability (up to 10 years). For casual wear, a ballistic NATO strap remains a contemporary and versatile alternative.

The strap is removed using a spring bar tool (two-pronged implement). Position the tool in the lug cavity, apply gentle pressure to release the internal catch, and retract the spring bar from the case. Repeat on the other side. When fitting the new strap, ensure both spring bars are securely seated within the lugs and the strap sits straight before releasing pressure.

Yes, any strap with a 17 mm lug width is compatible with the Conquest L3.381.4.97.6. Premium brands such as Milano Straps, Hirsch, Crafter Blue, and Crown & Buckle offer quality-certified options in 17 mm. Always verify the manufacturing tolerance (±0.5 mm) to guarantee a secure fit without excessive play.

A quality leather strap (alligator, calf, shell cordovan) with regular rotation (at least two straps in alternation) typically lasts 3–5 years with standard leathers, and up to 8–10 years with shell cordovan. Longevity depends on frequency of use, exposure to moisture and perspiration, and tanning quality. Leather ageing is a natural process highly valued by collectors.