Buying guide

Which Dive Watch Should I Buy? A Simple Dive Watch Buying Guide (2026)

6 min read·Updated 9 July 2026

The dive watch is a hugely popular style you can wear in the water and with everyday outfits, but not every one is water resistant enough for real diving. This article covers what to check before buying, with recommendations — browse authentic SEIKO and G-SHOCK as you read.

1. How dive watches differ from ordinary water-resistant watches

An ordinary water-resistant watch handles sweat, rain and hand washing. A dive watch is built to withstand pressure at depth, with a rotating timing bezel, lume that glows clearly underwater and tougher seals. Before buying, make sure you understand water-resistance ratings (WR / BAR / ATM).

2. Water resistance to look for

100m (10 BAR) — swimming and water play, but not recommended for serious diving
200m (20 BAR) — the real dive-watch standard; comfortable for recreational diving
Over 200m — for deep or professional diving; the price rises with the spec

Tip: don't press buttons or turn the crown underwater, and check the seals and gaskets regularly — worn seals are the number-one reason water gets in.

3. What the rotating bezel is for

The one-way bezel around the dial times how long you've been underwater. Divers line the arrow up with the minute hand to see how long they've been down. It only turns one way for safety: if it gets knocked, it shows less time remaining, never misleading you into thinking you can stay down longer.

4. Which movement: automatic vs solar vs battery

Many SEIKO dive watches are automatic, with no battery — read more in automatic vs quartz. CASIO and G-SHOCK models are usually quartz or solar powered (Tough Solar) and almost never need a battery change. Choose by how much maintenance you like.

5. Recommendations by use

Classic / mechanical watch lovers → an automatic SEIKO diver with a blue or black dial, fine in the water and at work. Read caring for a SEIKO automatic
Rugged / maximum toughness → a 200m, fully shock-resistant G-SHOCK for hard water activities
Dive style as fashion → choose a dial colour you love in a size that fits your wrist; it looks great without ever going diving

6. Buy from a shop that guarantees authenticity

Dive watches depend on properly made seals, and fakes often aren't truly water resistant. Shock Shop sells 100% authentic watches with free delivery anywhere in Thailand, cash on delivery, and our repair department replaces seals and tests water resistance after the sale.

FAQ

Can I dive with a 100m watch?

It's fine for water play and surface swimming, but not recommended for serious scuba diving. For diving, choose a 200m-plus model designed for it.

How do I look after an automatic dive watch?

Wear or wind it regularly so it keeps running, keep it away from strong magnetic fields, and have the seals checked or replaced periodically to keep its water resistance.