Misconception 1: Waterproof means it can handle any water. Water is undoubtedly a watch's biggest threat. Did you know watches are waterproof, not water vapor (hot water) proof? Statistics show that 80% of watch malfunctions in a year are due to water entering, often because wearers expose their watches to hot water during showers or baths.

Why aren't watches hot water-resistant? The waterproofing of watches is designed based on cold water scenarios. Even top-tier international watches can't withstand hot showers or saunas. The rubber gaskets responsible for the waterproofing can expand and contract with heat, creating gaps for water vapor to seep in. If not handled properly, this can lead to rust or corrosion, with potential irreparable damage to the movement.

Misconception 2: A watch rated 100M waterproof means it's safe 100 meters underwater. The depth in meters indicating a watch's waterproofness is a theoretical value. Real-world movements in water increase pressure. Waterproof levels roughly correspond to three types of watches regarding water exposure:

• Everyday life waterproof watches, 3ATM or Bar (30 meters): Splash-resistant, handles a few raindrops, not suitable for prolonged rain exposure.
• Everyday life enhanced waterproof watches, 10ATM or Bar (100 meters): Suitable for daily activities like washing hands, car washing, and showering, but not for prolonged water immersion.
• Diving waterproof watches, 50ATM or Bar (500 meters): Suitable for diving to specific depths, with different ratings for various water activities.

Misconception 3: The waterproof performance of a waterproof watch will never change. Waterproofing is not permanent; it's affected by various factors, such as wear and tear or the passage of time. Aging with wear can cause loss of elasticity, leading to gaps and water ingress. Seals may corrode or deform, cases may get damaged, or crystals may loosen or break. Regularly check and replace the watch's waterproof rubber gaskets, typically every two years for daily wear.

Regardless of a watch's waterproof rating, it's essential to handle it with care. Don't assume waterproof means invincible to water. The everyday waterproof design of watches perfectly suits our daily needs, but for those seeking more, choosing watches based on their waterproof rating is the key.