MARATHON 36mm Medium Diver's Automatic (MSAR Auto) Watch User Manual

1. Product Overview

The MARATHON 36mm Medium Diver's Automatic (MSAR Auto) is a robust, self-winding automatic watch designed for reliability and precision. It features a durable 316L stainless steel case and is built to withstand demanding conditions, making it suitable for military and professional use.

Key Features:

• Movement: Self-winding automatic 26 Jewel Marathon M2 Movement.
• Case: 316L Stainless Steel.
• Submersibility: 30 ATM (300 meters / 1000 feet).
• Luminous Features: Tritium gas tubes and MaraGlo for constant visibility in low light conditions.
• Dimensions: 36mm Diameter / 14mm Thickness - LUG WIDTH: 18mm.

2. Setting Up Your Watch

2.1. Setting Time and Date

To ensure accurate timekeeping, follow these steps to set the time and date on your MARATHON MSAR Auto watch:

1. Unscrew the Crown: Locate the crown on the side of the watch case. Gently unscrew it counter-clockwise until it is free from the case.
2. Set the Date (Position 1): Pull the crown out to the first position. Turn the crown clockwise to adjust the date.
3. Set the Day (Position 1): In the same first position, turn the crown counter-clockwise to adjust the day.
4. Set the Time (Position 2): Pull the crown out to the second (outermost) position. Turn the crown clockwise or counter-clockwise to set the hour and minute hands to the correct time. Ensure you account for AM/PM when setting the time, as the date will change at midnight.
5. Secure the Crown: Once the time and date are set, push the crown back into the case and gently screw it clockwise until it is fully secured. This ensures water resistance.

2.2. Winding the Automatic Movement

Your MSAR Auto watch is powered by a self-winding automatic movement. This means it is wound by the motion of your wrist. If the watch has stopped or its power reserve is low, you can manually wind it:

1. Unscrew the Crown: Gently unscrew the crown counter-clockwise until it is free.
2. Manual Winding: In the neutral position (crown unscrewed but not pulled out), turn the crown clockwise approximately 20-30 times. This will build up a sufficient power reserve to start the watch.
3. Secure the Crown: Push the crown back in and screw it clockwise until it is fully secured to maintain water resistance.

For a visual guide on setting the day and date, please refer to the video below:

3. Operating Your Watch

3.1. Using the Rotating Bezel

The unidirectional rotating bezel on your MSAR Auto watch is a crucial tool for divers and for timing events. It rotates counter-clockwise to prevent accidental increases in dive time.

1. For Dive Timing: Before a dive, align the bezel's zero marker with the minute hand. The minute hand will then indicate the elapsed time on the bezel's scale.
2. For General Timing: To time any event up to 60 minutes, rotate the bezel so the zero marker aligns with the current position of the minute hand. Read the elapsed time on the bezel as the minute hand progresses.

3.2. Water Resistance

Your MARATHON MSAR Auto watch is water-resistant to 30 ATM (300 meters / 1000 feet). This rating means it is suitable for professional marine activity and serious surface water sports, as well as scuba diving. Always ensure the crown is fully screwed down before exposing the watch to water.

3.3. Luminous Display

The watch features Tritium gas tubes and MaraGlo technology for self-illuminating constant visibility. Tritium gas tubes provide a continuous glow without requiring external light exposure, making the dial readable in total darkness. MaraGlo enhances visibility in varying light conditions.

4. Care and Maintenance

4.1. Cleaning Your Watch

To maintain the appearance and longevity of your watch:

• Wipe the case and crystal with a soft, damp cloth.
• For the rubber strap, use mild soap and water. Rinse thoroughly and dry completely.
• Avoid using harsh chemicals or abrasive materials, as these can damage the watch's finish or seals.

4.2. Water Resistance Checks

While your watch is highly water-resistant, seals can degrade over time. It is recommended to have the water resistance checked by an authorized service center annually, especially if the watch is frequently exposed to water or if the case back has been opened.

4.3. Storage

When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. Avoid placing it near strong magnetic fields, as this can affect the movement's accuracy.

4.4. Servicing

For optimal performance, it is recommended to have your automatic watch serviced by an authorized MARATHON service center every 3-5 years. Regular servicing ensures the movement is clean, lubricated, and functioning correctly.

5. Troubleshooting

5.1. Watch Not Running

• Automatic Movement: If the watch has stopped, it may need to be manually wound (refer to Section 2.2) or worn for several hours to build up the power reserve.
• Crown Position: Ensure the crown is fully pushed in and screwed down. If it's pulled out, the watch will not run.

5.2. Time Inaccuracy

• Magnetic Fields: Exposure to strong magnetic fields can affect the watch's accuracy. If you suspect this, a professional watchmaker can demagnetize the movement.
• Power Reserve: An insufficient power reserve can lead to erratic timekeeping. Ensure the watch is adequately wound.
• Servicing: If inaccuracy persists, the movement may require servicing by a qualified technician.

5.3. Condensation Under Crystal

If you notice condensation under the crystal, it indicates a breach in the watch's water resistance. Immediately take the watch to an authorized service center to prevent further damage to the movement.

6. Specifications

7. Warranty and Support

MARATHON watches are built to high standards and are covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty details, including duration and coverage, please refer to the warranty card included with your purchase or visit the official MARATHON Watch Company website.

For technical support, service requests, or inquiries about your watch, please contact MARATHON Watch Company directly through their official channels. Always ensure that any repairs or servicing are performed by authorized technicians to maintain the watch's integrity and warranty.