Is an automatic watch better than a quartz watch?

Not in accuracy: a quartz watch keeps better time than almost any mechanical watch and needs little upkeep beyond a battery. People choose automatics for the craftsmanship, the sweeping seconds hand and the fact that no battery is needed. Which is better depends on whether you value convenience or mechanics.

What watch size should I choose for my wrist?

Look at how far the lugs, the points where the strap attaches, extend. They should not overhang the edges of your wrist. Case diameter is a starting point, but lug-to-lug length and case thickness matter just as much, so try a watch on or compare its measurements with one you already own.

Can I swim with a watch marked water resistant to 30 meters?

Generally no. A 30-meter or 3-bar rating usually means the watch can handle splashes and rain, not swimming. For swimming, look for 100 meters or more with a screw-down crown, and for diving, choose a watch specifically certified as a diver's watch.

How to Choose a Watch: Quartz, Automatic or Mechanical

A watch is unusual among accessories: it is jewelry, a tool and, for many people, the one piece worn every day for years. That makes it worth choosing carefully. The good news is that the decision comes down to a handful of questions, and none of them requires a collector's vocabulary.

Start with the movement

The movement is the engine inside the case. There are three main types.

Quartz. A battery sends current through a tiny quartz crystal, which vibrates at a precise frequency; a circuit turns that into ticks. Quartz watches are highly accurate, affordable to maintain and ready to wear any time. The battery typically lasts years, and replacing it is a simple job for a jeweler.

Mechanical (manual wind). A wound spring stores energy and releases it through a series of gears, regulated by an oscillating balance wheel. You wind it by turning the crown, usually daily or every few days. It is the traditional form of watchmaking, and many people enjoy the ritual.

Automatic (self-winding). A mechanical movement with a weighted rotor that spins as your wrist moves, winding the spring for you. Worn daily, it keeps running; left in a drawer, it stops after its power reserve runs out and needs resetting. A watch winder can keep it going, but it is not required.

	Quartz	Manual mechanical	Automatic
Accuracy	Very high	Lower; varies by quality	Lower; varies by quality
Power	Battery	Hand winding	Wrist motion (and hand winding on many)
Upkeep	Battery change every few years	Periodic professional service	Periodic professional service
Seconds hand	Ticks once per second	Smooth sweep	Smooth sweep
Appeal	Convenience, value	Craft, ritual, thin cases	Craft without daily winding

Mechanical watches gain or lose a few seconds a day, more or less depending on quality and regulation. Some carry chronometer certification, meaning the movement passed independent accuracy testing within a tight daily tolerance. If precision is the priority, quartz wins at almost every price.

Mechanical watches also need servicing: cleaning, oiling and adjustment by a watchmaker every several years. Ask about recommended service intervals and typical costs before buying, because they can be significant on complex pieces.

Size: the measurement that matters most

Case diameter, in millimeters, is the number on every listing, but it is only part of the story. Fit depends on three measurements:

Diameter, the width of the case, usually excluding the crown.
Lug-to-lug, the distance between the tips of the lugs. If this is longer than the top of your wrist is wide, the watch will overhang and look too big.
Thickness, which decides whether the watch slides under a shirt cuff.

There is no universally right size, and the old split between "men's" and "women's" sizes matters far less than it once did. Smaller, slimmer cases read as dressier and more vintage; larger cases feel sportier. The simplest test is to try the watch on, or to compare its measurements with a watch you already wear comfortably.

Case materials and crystal

Stainless steel is the default for good reason: durable, corrosion resistant and easy to refinish.
Titanium is lighter and hypoallergenic for most people, but can scratch more visibly.
Gold and gold-plated cases add warmth and formality; plated cases can wear at edges over time.
Ceramic resists scratches very well but can crack if dropped hard.

The crystal, the transparent cover over the dial, is usually mineral glass or synthetic sapphire. Sapphire is far more scratch resistant and is worth looking for on a watch you plan to wear daily. Acrylic, found on some vintage-style models, scratches easily but can be polished.

Water resistance, decoded

Water-resistance ratings are among the most misunderstood numbers in watches. They come from pressure tests, not real-world depths, and the international standards (ISO 22810 for water-resistant watches and ISO 6425 for diver's watches) set out what manufacturers must test.

A rough practical guide:

30 m / 3 bar: splashes, rain and handwashing. Not for swimming.
50 m / 5 bar: brief, light water contact, such as a quick dip, on many models.
100 m / 10 bar: swimming and snorkeling, especially with a screw-down crown.
200 m or a diver's certification: diving and serious water sports.

Gaskets age, so water resistance is not permanent. If you swim with a watch, have it pressure-tested when it is serviced or when the battery is changed. Never operate the crown or pushers underwater unless the watch is designed for it.

Styles that work across a wardrobe

Most people build a first collection from a few enduring archetypes:

The dress watch. Thin, simple dial, leather strap. Works with tailoring and formal wear.
The field watch. Clear numerals, robust case, often on canvas or leather. Casual and highly legible.
The dive-style watch. Rotating bezel, strong lume, steel bracelet or rubber strap. Surprisingly versatile.
The chronograph. A stopwatch function with sub-dials. Sporty, but busier to read.
The minimalist watch. Clean dial, few markers. Pairs with almost anything.

If you will own only one, a steel watch with a neutral dial in a moderate size, water resistant to at least 100 meters, can move from a weekday office to a beach weekend. Changing the strap changes its personality.

Straps and bracelets

Leather is classic and comfortable but dislikes water and sweat; rotate it in hot months.
Steel bracelets are durable and sporty; check that links can be removed for sizing and that the clasp is secure.
Rubber or silicone is ideal for swimming and workouts.
Fabric straps (nylon, canvas) are inexpensive, breathable and easy to swap.

Note the lug width, the gap between the lugs in millimeters, so you can buy replacement straps that fit.

Buying wisely

Authorized dealers provide the manufacturer's warranty. Gray-market sellers may offer lower prices but sometimes without the brand's warranty.
Pre-owned watches can offer excellent value; ask about service history, original parts and whether the box and papers are included.
Counterfeits are widespread online. Buy from established sellers and be wary of prices far below the market.
Smartwatches are a different category: useful for fitness and notifications, but they depend on software support and batteries that age. Many people pair one for workouts with a traditional watch for everything else.

Choose the movement that matches your patience, the size that matches your wrist and the style that matches most of your days. A watch chosen that way gets worn, and a worn watch is the only kind that earns its price.

Mechanical, Automatic or Quartz: How to Choose Your First Good Watch