Engineer II Moon Calendar - 40mm - Green

To set the moon phase, you typically need to advance the calendar functions until the moon indicator reaches the desired phase. Consult your specific model's user manual for the exact procedure, as it often involves using the recessed pushers in a particular sequence.

As an automatic mechanical watch, the Engineer II Moon Calendar's power reserve is typically around 38-42 hours when fully wound. This means it will continue to run for that duration after being taken off the wrist.

The suitability for swimming depends on the specific water resistance rating of your Engineer II Moon Calendar model. Always check the case back or documentation for its ATM rating and avoid water exposure beyond its limits.

The H₃ micro gas tubes are designed to glow for up to 25 years without any external charging, providing consistent luminosity.

Adjusting the bracelet size typically involves removing or adding links, which can be done with a bracelet sizing tool. However, it's recommended to have this done by a qualified watchmaker to avoid scratching the bracelet or damaging the pins.

'40mm' refers to the diameter of the watch case, measured from the left side to the right side, excluding the crown.

Ensure the watch is wound. If it is an automatic, wear it for at least 8 hours, or manually wind the crown approximately 30-40 times clockwise until resistance is felt.

Mechanical watches can be affected by magnetism or physical shock. Avoid strong magnetic fields and significant impacts. If the issue persists, professional servicing may be required.

Ensure you are not setting the complications between 9 PM and 3 AM, as this can damage the movement. Consult the user manual for the correct procedure to set these functions.

The H₃ micro gas tubes are self-powered and do not require external charging. If they appear dim, it may be due to their expected lifespan or a manufacturing defect. Contact customer support.