Casio Water Resistance Explained + Care Tips

The water-resistance mark on your Casio's dial or case back tells you what the watch can handle. It is not a depth you can dive to — it is a pressure rating. Getting it right is the easiest way to keep your watch working for years.

What the markings mean

• WATER RESIST (no number): everyday use only — rain, splashes and washing your hands. Do not swim, shower or bathe with it. Examples: F-91W, A158WA, most Enticer dress watches such as the MTP-V002D.
• 50M / 5 BAR: swimming in a pool and light water activities. No diving and no hot showers. Examples: MTP-E735D, AMW-880D.
• 100M / 10 BAR: swimming, snorkelling and water sports. Examples: W-800H, most EDIFICE models such as the EFV-100D.
• 200M / 20 BAR: demanding water sports and recreational diving (not scuba below the rated limits). Typical for G-SHOCK, such as the DW-5600E.

7 rules that keep water out

1. Never press buttons under water (unless the watch is a diver's model designed for it). Pressing a button can let water in.
2. Avoid hot water. Hot showers, baths and saunas expand the gaskets and seals and can cause leaks or fog inside the glass.
3. Rinse after the sea or pool. Salt and chlorine damage seals and bracelets. Rinse in fresh water and dry with a soft cloth.
4. Keep the crown pushed in (or screwed down, if it is a screw-down crown).
5. No sudden temperature changes — for example, from a cold air-conditioned room straight into hot sun and water.
6. Have the seals checked when the battery is changed. Gaskets age over time.
7. If you see fog inside the glass, stop using it in water and bring it for service quickly.

Battery tips

• Most Casio quartz watches run 2–10 years on one battery. Solar models (Tough Solar) charge from light — keep them near a window now and then.
• When the battery runs low, replace it soon. A flat battery left inside can leak.
• Have the battery changed at a proper watch shop so the case back is resealed correctly. Battery replacement is not covered by our warranty.

Strap and bracelet care

• Resin straps (G-SHOCK, Vintage, Youth): wash with mild soap and water, dry well. Avoid perfume and strong chemicals.
• Stainless steel bracelets (EDIFICE, Enticer, A158): brush gently with a soft toothbrush and soapy water, rinse and dry.
• Leather straps: keep away from water and sweat as much as possible; leather is not water resistant even if the watch is.

বাংলায় সংক্ষেপে

• WATER RESIST: শুধু বৃষ্টি ও হাত ধোয়া — সাঁতার বা গোসল নয়।
• 50M: পুলে সাঁতার চলবে, ডাইভিং বা গরম পানিতে গোসল নয়।
• 100M: সাঁতার ও স্নরকেলিং চলবে।
• 200M (G-SHOCK): কঠিন ওয়াটার স্পোর্টসও চলবে।
• পানির নিচে বাটন চাপবেন না, গরম পানি এড়িয়ে চলুন, সমুদ্রের পানির পর মিষ্টি পানিতে ধুয়ে নিন।

FAQ

Can I shower with my Casio watch? It is best not to. Hot water and soap can damage the seals, even on 100 m and 200 m models.

Is "Water Resist" the same as waterproof? No. It means splash resistant only.

Does the warranty cover water damage? No. Water damage from misuse is not covered by our 1-year shop warranty. See the warranty policy.