Hamilton Khaki Navy Frogman Auto Chrono

Watch Features

• A) Crown protector
• B) Start-Stop button
• C) Reset-to-zero button
• D) Crown protector
• E) Crown for adjustment of time and date
• 1) 60-second counter
• 2) 30-minute counter
• 3) 12-hour counter
• 4) Date

Recommendations

Hamilton watches are precision instruments that require regular maintenance. It is recommended to have your watch checked by an authorized Hamilton agent at least once every two years to ensure its water-resistance and optimal performance. Ensure sealing features are tested during each check-up.

Water-Resistance: The water-resistance of this watch is 20 ATM (200 meters / 660 feet).

Five basic rules for maintaining water-resistance:

1. Have your watch checked regularly.
2. Do not operate the crown when submerged in water.
3. Rinse your watch with fresh water after immersion.
4. Dry your watch thoroughly if it becomes wet.
5. Have the water-resistance checked by an authorized Hamilton agent whenever the case is opened.

This watch features an automatic movement powered by the motion of your wrist. The power reserve is approximately 42 hours. The movement can also be wound manually. The transparent case back allows viewing of the intricate watch mechanism.

Adjusting the Time

1. Unscrew the crown protector (D).
2. Pull the crown (E) out to the fully extended position (p2).
3. Adjust the time by rotating the crown in the desired direction.
4. Push the crown back in fully and screw down the crown protector (D).

Adjusting the Date

1. Unscrew the crown protector (D).
2. Pull the crown (E) out to the intermediate position (p1).
3. Turn the crown clockwise to set the desired date. Avoid adjusting the date between 8 p.m. and 2 a.m. (20:00 and 02:00) to prevent potential damage to the movement.
4. Push the crown back in fully and screw down the crown protector (D).

Measuring a Single Time with the Start-Stop Function

1. Unscrew the crown protector (A) to access the chronograph buttons.
2. Press button (B) to start the chronograph.
3. Press button (B) again to stop the chronograph.
4. Press button (C) to reset the chronograph hands to zero.
5. After use, ensure the crown protector (A) is screwed back down.

Note: Before starting a time measurement, ensure the chronograph hands are reset to zero. If necessary, press button (C).

Add Function (Measuring Successive Times)

This function allows for measuring cumulative times.

1. Unscrew the crown protector (A) to access the chronograph buttons.
2. Press button (B) to start the chronograph.
3. Press button (B) again to stop the chronograph.
4. Repeat steps 2 and 3 for each subsequent time measurement. The chronograph will display the total accumulated time.
5. Press button (C) to reset all chronograph hands to zero.
6. After use, ensure the crown protector (A) is screwed back down.