Introdución
This manual provides essential instructions for the proper use, setup, and maintenance of your Longines Hydroconquest Automatic Blue Dial 41mm Men's Watch, model L37423967. Please read this guide thoroughly to ensure optimal performance and longevity of your timepiece.
Compoñentes do reloxo
Familiarize yourself with the key components of your Longines Hydroconquest watch.

Imaxe 1: Fronte view of the Longines Hydroconquest Automatic Watch L37423967. This image displays the watch's blue dial with gold-tone hour markers and hands, a uni-directional rotating bezel with gold accents, and a two-tone stainless steel bracelet. The date window is visible at the 3 o'clock position, and the Longines logo is prominently featured below the 12 o'clock marker. The text "AUTOMATIC 30bar (300meter)" is visible on the dial, indicating its automatic movement and water resistance.
- Coroa: Located on the right side of the case, used for winding the watch and setting the time and date.
- Uni-directional Rotating Bezel: The outer ring of the watch face, designed to rotate in one direction. It is used for timing dives or other events.
- Marcar: The watch face, featuring hour markers (including "12", "9", "6" numerals), hands (hour, minute, second), and the date display at the 3 o'clock position.
- Cristal de zafiro: The transparent cover protecting the dial, known for its scratch resistance.
- Pulseira: The two-tone stainless steel band with a fold-over clasp for secure wearing.
Configuración inicial
Enrolando o reloxo
Your Longines Hydroconquest is an automatic watch, meaning it is powered by the motion of your wrist. However, if the watch has stopped or has not been worn for an extended period, it may require manual winding.
- Unscrew the crown by turning it counter-clockwise until it springs out to position 1.
- Turn the crown clockwise approximately 30-40 times. This will manually wind the mainspring.
- Empurre a coroa de volta e atorníllea no sentido das agullas do reloxo para garantir a resistencia á auga.
Axuste da hora e da data
- Unscrew the crown by turning it counter-clockwise until it springs out to position 1.
- Gently pull the crown out to position 2 (first click) to set the date. Turn the crown clockwise or counter-clockwise until the correct date is displayed. Avoid setting the date between 9 PM and 3 AM to prevent damage to the movement.
- Pull the crown out further to position 3 (second click) to set the time. The second hand will stop. Turn the crown to move the hour and minute hands to the desired time. To ensure accuracy, synchronize with a reliable time source.
- Once the time and date are set, push the crown back into position 1 and screw it down clockwise firmly against the case to maintain water resistance.
Funcionamento do reloxo
Using the Uni-directional Rotating Bezel
The Hydroconquest features a uni-directional rotating bezel, primarily used for timing elapsed periods, such as dive times.
- Align the zero marker (triangle) on the bezel with the minute hand at the start of the event you wish to time.
- As time passes, the minute hand will indicate the elapsed time against the bezel's scale.
- The uni-directional rotation prevents accidental movement that would indicate a shorter elapsed time, a critical safety feature for divers.
Resistencia á auga
Your Longines Hydroconquest watch is water-resistant to 30 bar (300 meters / 1000 feet). This makes it suitable for professional marine activity and serious surface water sports, but not for saturation diving.
- Asegúrate sempre de que a coroa estea completamente aparafusada antes de expoñer o reloxo á auga.
- Do not operate the crown or pushers (if present on other models) while the watch is submerged or wet.
- Despois da exposición á auga salgada, enxágüe o reloxo con auga limpa e séqueo ben cun pano suave.
Coidados e Mantemento
Limpeza
To maintain the appearance of your watch, clean it regularly.
- Use un suave, damp cloth to wipe the case and bracelet. For stubborn dirt, a mild soap solution can be used, followed by rinsing with fresh water (only if the crown is fully screwed down).
- Dry the watch thoroughly with a soft, lint-free cloth.
- Avoid using harsh chemicals, solvents, or abrasive cleaning materials.
Service and Inspection
For optimal performance and to maintain water resistance, it is recommended to have your watch inspected and serviced by an authorized Longines service center every 3-5 years. This includes checking gaskets, lubricating moving parts, and ensuring timekeeping accuracy.
Almacenamento
When not wearing your watch, store it in a cool, dry place, away from direct sunlight and strong magnetic fields.
Resolución de problemas
If you encounter any issues with your watch, refer to the table below for common problems and their solutions.
| Problema | Causa posible | Solución |
|---|---|---|
| O reloxo parou ou vai lento. | Reserva de marcha insuficiente (non está o suficientemente gastada ou non ten corda manual). | Manually wind the watch by turning the crown clockwise 30-40 times. Wear the watch regularly for at least 8 hours a day. |
| A data non cambia á medianoite. | Time is set to AM instead of PM, or vice-versa. | Adianta a hora 12 horas. Asegúrate de que a data cambie arredor da medianoite, non do mediodía. |
| Condensación baixo o cristal. | Loss of water resistance due to impact, aging gaskets, or crown not fully screwed down. | Immediately take the watch to an authorized service center for inspection and repair to prevent internal damage. Ensure the crown is always screwed down. |
| Bracelet clasp is loose. | Clasp mechanism wear or adjustment needed. | Inspect the clasp for debris. If necessary, visit a jeweler or authorized service center for adjustment or repair. |
For issues not listed here or if solutions do not resolve the problem, please contact an authorized Longines service center.
Especificacións
| Número de modelo | L37423967 |
| Movemento | Automático |
| Material do caso | Aceiro inoxidable |
| Diámetro da caixa | 41 mm |
| Espesor da caixa | 11.90 mm |
| Cor do dial | Azul |
| Cristal | Zafiro resistente aos arañazos |
| Bisel | Uni-directional Rotating Coin Edge |
| Material da pulseira | Two-tone (Silver-tone and Yellow Gold PVD) Stainless Steel |
| Tipo de broche | Fold Over Clasp |
| Resistencia á auga | 300 meters / 1000 feet (30 bar) |
| Fabricante | Longines |
| Data de primeira dispoñibilidade | 2 de outubro de 2017 |
Garantía e Soporte
Your Longines watch is covered by a manufacturer's warranty against manufacturing defects. The specific terms and duration of the warranty are provided with your purchase documentation. Please retain your proof of purchase for warranty claims.
For warranty service, repairs, or technical assistance, please contact an authorized Longines service center or the retailer from whom you purchased the watch. Using unauthorized service providers may void your warranty.
You can find a list of authorized service centers on the official Longines websitio: www.longines.com/en/customer-service/service-centers





