Longines HydroConquest L3.642.4.56.6 - Stainless Steel, Black Dial, Automatic, Full Set (2010)

Brand	Longines
Model	HydroConquest
Reference	L3.642.4.56.6
Year	2010
Condition	Very Good
Set	Box & Papers
Location	Tallinn, Estonia
Movement
Type	Mechanical (Automatic)
Caliber	L633
Power Reserve	38h
Jewels	25
Case
Material	Stainless Steel
Size	41 mm
Thickness	11.6 mm
Water Resistance	300m
Bezel	Aluminium, Unidirectional
Crystal	Sapphire crystal
Dial	Black
Bracelet / Strap
Material	Stainless Steel
Color	Stainless Steel
Clasp	Fold clasp
Bracelet Length	Fits up to 21 cm wrist (23cm with diving extension)
Functions
Features	Date
Service History
Last Service	10.02.2026 by in-house certified watchmaker

A robust and highly respected Swiss dive watch, the Longines HydroConquest L3.642.4.56.6 represents the first generation of the modern HydroConquest series from Longines. Introduced in the late 2000s, this model combines classic dive-watch functionality with Longines’ elegant design philosophy, offering professional 300-meter water resistance, a screw-down crown, and a unidirectional aluminum dive bezel.

This example features the classic black dial with luminous markers and Arabic numerals, ensuring excellent readability both underwater and in everyday use. The aluminium bezel remains in good condition, preserving the original aesthetic of these early HydroConquest models. Inside beats the reliable Longines automatic caliber L633 (ETA 2824-2 base), known for its durability and easy serviceability.

The watch is presented in very good condition and has just been fully serviced by our in-house certified watchmaker on 10.02.2026, including installation of a new sealing kit and full testing to ensure proper functionality. A particularly attractive feature of this example is its complete service history, with documented services from 2016, 2021, 2024, and 2026, along with test results.

Offered as a Full Set, it includes the original outer box, presentation box, manual, and International Warranty Card dated 23.07.2010. The stainless steel bracelet fits wrists up to 21 cm, extending to 23 cm with the diver extension.

The watch also comes with a PW Service Card (10.02.2026) and PW Certificate of Authenticity, making it a well-documented and dependable Swiss dive watch ready for many years of use.

All watches are shipped free of charge via DHL Express with full insurance. Dispatch is arranged within 0–2 business days after your payment has been received in our bank account. On average, delivery takes 1–2 business days within the EU, 2–4 business days to the USA, and 2–4 business days worldwide. The watch is located in the European Union (EU). Buyers are responsible for any duties and taxes for watches shipped internationally (outside the EU). We do not ship on weekends. For security, delivery is made only to the person named on the order. A valid ID and the tracking number, provided prior to shipping, will be required upon receipt.

Watches are eligible for return or refund within 14 days from the date the package is delivered. All returned watches will be thoroughly inspected for any signs of wear, tear, or damage. Any such signs may negatively impact the customer’s refund. Refunds are issued to the original payment method used at the time of purchase. All watches are delivered with a transparent protective tape and a secure seal that does not obstruct inspection of the watch. If the tape is removed or the seal is broken, returns will not be accepted. In the unlikely event that a return package goes missing during transit, insurance claims will be processed, and a refund will be issued only upon completion of the insurance claim.

Every timepiece from PASHA WATCHES is backed by our commitment to quality and authenticity. We provide a one-year limited warranty on all pre-owned watches and a six-month limited warranty on vintage timepieces (over 25 years old).

Our warranty covers defects in materials and workmanship under normal use. It does not cover water or moisture damage, natural wear and tear, accidental damage, or issues caused by misuse or improper handling. The warranty also excludes external components such as the bracelet, glass, dial, hands, pushers, crown, and bezel, as well as any work performed by unauthorized service providers.

While we take every measure to ensure reliability, water resistance is not guaranteed on vintage watches, unless explicitly stated in writing.

Every PASHA WATCHES timepiece is inspected, tested, and prepared by our certified watchmaker — ensuring lasting precision, authenticity, and peace of mind with your purchase.