Certina DS PH200M - 39mm - White

While specific power reserve figures can vary slightly with usage and conditions, automatic watches like the DS PH200M typically have a power reserve of around 38-42 hours when fully wound.

With 200 meters (20 bar) of water resistance and Certina's DS Concept, this watch is suitable for swimming and snorkeling. For professional diving, a watch specifically rated and tested for such activities is recommended.

The strap can be cleaned with mild soap and water using a soft cloth. Ensure it is rinsed thoroughly with fresh water and dried completely. Avoid prolonged exposure to direct sunlight when not in use.

DS stands for Double Security. It's Certina's system that ensures high resistance to shocks and water, incorporating features like a reinforced case back, specific gaskets, and a scratch-resistant sapphire crystal.

Mother-of-pearl is a natural material and, while beautiful, can be sensitive to harsh chemicals and extreme temperature changes. Handle with care and clean gently as per the care instructions.

It is generally recommended to have an automatic watch serviced every 3-5 years to ensure optimal performance and longevity of the movement.

Ensure the watch has been worn or wound recently. Automatic watches stop if they lose their power reserve. Gently shake the watch or wind the crown manually.

Automatic watch accuracy can be affected by factors like magnetism or significant temperature changes. If consistently inaccurate, it may require servicing. Ensure the watch is not exposed to strong magnetic fields.

Ensure the crown is pulled out to the correct position for setting. If the crown feels stiff, do not force it; consult a watchmaker.

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