A watch with 100m water resistance is suitable for swimming, snorkeling, and similar water activities. It is not recommended for diving.

Mechanical watches should be serviced every 3-5 years. Quartz watches need less frequent servicing, but it's good to check them every 4-6 years.

It's recommended to have your watch's battery replaced by a professional to ensure the water resistance is maintained.

Wipe your watch with a soft, dry cloth for regular cleaning. For a deeper clean, use a soft brush with soapy water, then rinse and dry thoroughly.

Even if a watch is water-resistant, it's best to avoid wearing it in the shower due to the harmful effects of hot water and steam on its seals.

If your watch is water-resistant, just wipe it dry. If it isn't, and water gets inside, take it to a professional for assessment and repair.

Store your watch in a dry place, away from direct sunlight and extreme temperatures. A watch box or padded case is ideal.

Quartz watches use a battery-powered electronic oscillator synchronized by a quartz crystal, while mechanical watches use a clockwork mechanism.

This could be due to a low battery, exposure to magnets, or the need for servicing. If the issue persists, consult a professional.

• For simple adjustments, like a leather strap with a buckle, you can do it yourself. For metal bands or complex clasps, it's better to get help from a professional.