Frederique Constant Classics - Blue Dial - 40mm

No, this is an automatic watch and is powered by the movement of the wearer's wrist or manual winding, not a battery.

The watch has a power reserve of approximately 38 hours when fully wound and not being worn.

Pull the crown out to the second position to set the time. If your model has a date function, pull the crown to the first position to adjust the date. Always ensure the crown is pushed back in fully after setting.

With a water resistance of 50 meters, this watch is suitable for everyday wear and can withstand splashes or brief immersion. It is not recommended for swimming or diving.

It is generally recommended to service an automatic watch every 3 to 5 years to ensure its optimal performance and longevity.

Yes, wearing the watch while sleeping can help maintain its power reserve, provided you move sufficiently during your sleep. Alternatively, manual winding can be done each morning.

The watch features a convex sapphire crystal, known for its exceptional scratch resistance and clarity.

Ensure the watch has been sufficiently wound. If worn daily, the movement should sustain the 38-hour power reserve. If not worn, manual winding may be necessary. If the issue persists, the watch may require servicing.

Ensure the crown is fully pushed in or unscrewed before attempting to wind or set the time. If it remains stiff, do not force it; seek professional assistance.

Check that the push-button deployment clasp is fully engaged. Ensure there is no debris obstructing its mechanism. If it continues to be loose, consult a watch professional for adjustment or repair.

This indicates a potential breach in water resistance. Remove the watch from moisture immediately and have it inspected by a qualified watchmaker to prevent internal damage.