Strap for HydroConquest 41 Automatic PVD / Black / Bracelet / Japan

The lug width of the Longines HydroConquest L3.742.2.56.6 is 20 millimetres. This intermediate standard allows versatile pairing with various strap materials, from alligator to calf, rubber to nato, ensuring balanced proportions on the 41mm case.

For the Blackout Japan Edition we recommend: black alligator for sartorial elegance, vegetable-tanned calf for organic patina development, rubber or nato in blue/black for diving practicality. Your choice depends on the desired balance between sportiness and refinement. All straps must have a 20mm lug width.

The strap on the Longines L3.742.2.56.6 is replaced by removing the spring bars from the lugs using a spring bar remover tool. Place the watch on a soft surface, carefully insert the tool tip into the hole beneath the lug, extract the spring bar, unfasten the old strap, and insert the new one by aligning the holes with the movable bars.

Yes, the Longines L3.742.2.56.6 is fully compatible with aftermarket 20-millimetre straps. Artisanal straps in alligator, vegetable-tanned calf, shell cordovan, rubber and nato insert perfectly into the lugs without excessive play, preserving the watch's proportional balance.

A high-quality leather strap (alligator, calf) typically lasts 3-5 years with moderate daily use, depending on environment, humidity and maintenance. Vegetable-tanned leather ages more rapidly if exposed to salt water, whilst chemically-tanned calf resists moisture better. Rubber and nato offer superior durability in humid environments.