FKM Rubber Watch Strap compatible with Longines Hydroconquest 21mm - Deployant Buckle / Curved

21 mm FKM Strap for Longines HydroConquest

FKM fluoroelastomer rubber strap with curved ends, designed for certain Longines HydroConquest references with a lug width of 21 mm.

The curved shape allows the strap to follow the profile of the case. The strap comes with a deployment clasp and a mounting kit.

Compatibility

• Longines HydroConquest L3.781
• Longines HydroConquest L3.782
• Longines HydroConquest L3.642
• Longines HydroConquest L3.742

Verification before ordering

Please measure your watch's lug width before ordering. The inner distance between the two lugs must be exactly 21 mm.

For a strap with curved ends, width alone does not always guarantee compatibility. Also check the full watch reference, case shape, and spring bar position.

Dimensions

• Lug width: 21 mm
• Long side length: 11.5 cm
• Short side length: 8 cm
• Total length without buckle: 19.5 cm
• Thickness: approximately 3 mm

Lengths are measured without the buckle. Check these dimensions against your wrist circumference before ordering.

Technical specifications

• Material: FKM fluoroelastomer rubber
• Curved ends
• Deployment clasp
• Soft and washable surface
• Resistance to humidity, perspiration, oils, and aging
• Suitable for daily use

Kit contents

• Two-piece FKM strap
• Deployment clasp
• Spring bars
• Mounting tool

Installation

After installation, check that the spring bars are correctly engaged in the lug holes. Gently pull on each part of the strap to check the attachment before wearing the watch.

If in doubt, have the strap installed by a watchmaker.

Important information

Adaptable strap of independent manufacture. This product is not manufactured, distributed, or endorsed by Longines. The watch shown in the photographs is not included.