Longines Hydroconquest Automatic Watch L37423967 User Manual

Introduction

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.

Watch Components

Familiarize yourself with the key components of your Longines Hydroconquest watch.

Image 1: Front 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.

• Crown: 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.
• Dial: 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.
• Sapphire Crystal: The transparent cover protecting the dial, known for its scratch resistance.
• Bracelet: The two-tone stainless steel band with a fold-over clasp for secure wearing.

Initial Setup

Winding the Watch

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.

1. Unscrew the crown by turning it counter-clockwise until it springs out to position 1.
2. Turn the crown clockwise approximately 30-40 times. This will manually wind the mainspring.
3. Push the crown back in and screw it down clockwise to ensure water resistance.

Setting the Time and Date

1. Unscrew the crown by turning it counter-clockwise until it springs out to position 1.
2. 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.
3. 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.
4. 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.

Operating Your Watch

Using the Uni-directional Rotating Bezel

The Hydroconquest features a uni-directional rotating bezel, primarily used for timing elapsed periods, such as dive times.

1. Align the zero marker (triangle) on the bezel with the minute hand at the start of the event you wish to time.
2. As time passes, the minute hand will indicate the elapsed time against the bezel's scale.
3. The uni-directional rotation prevents accidental movement that would indicate a shorter elapsed time, a critical safety feature for divers.

Water Resistance

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.

• Always ensure the crown is fully screwed down before exposing the watch to water.
• Do not operate the crown or pushers (if present on other models) while the watch is submerged or wet.
• After exposure to saltwater, rinse the watch with fresh water and dry it thoroughly with a soft cloth.

Care and Maintenance

Cleaning

To maintain the appearance of your watch, clean it regularly.

• Use a soft, 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.

Storage

When not wearing your watch, store it in a cool, dry place, away from direct sunlight and strong magnetic fields.

Troubleshooting

If you encounter any issues with your watch, refer to the table below for common problems and their solutions.

For issues not listed here or if solutions do not resolve the problem, please contact an authorized Longines service center.

Specifications

Warranty and Support

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 website: www.longines.com/en/customer-service/service-centers