Watch terms, defined.

43 terms planned

• What lug to lug means on a watchlug to lug

  Lug to lug is the measurement from one lug tip to the other. It predicts how a watch will sit on your wrist better than case size does.

• Watch lug width explainedwatch lug width

  Lug width is the gap between a watch's lugs, in millimeters. It decides which strap or bracelet width fits. Here's how to read it.

• Watch reference numbers explainedwatch reference number

  A reference number identifies an exact watch configuration. Here's what it encodes, where to find it, and why it matters when you buy.

• Watch case size (and diameter) explainedwatch case size

  Case size is the watch's diameter in millimeters, minus the crown. Here's why it's only half the story on how big a watch wears.

• What an automatic watch iswhat is an automatic watch

  An automatic watch winds itself as you move, with no battery. How it works, what owning one is like, and when quartz is the better pick.

• Quartz vs automatic watchesquartz vs automatic watch

  Quartz runs on a battery and keeps near-perfect time. Automatic winds itself and has mechanical character. How to choose between them.

• What a GMT watch iswhat is a gmt watch

  A GMT watch shows a second time zone with an extra 24-hour hand. How to read one, and who actually needs it.

• What a chronograph iswhat is a chronograph

  A chronograph is a watch with a built-in stopwatch. What the pushers and subdials do, and what people really use it for.

• What a microbrand watch ismicrobrand watch

  A microbrand is a small, independent watch company, usually selling online. The upsides, the risks, and how to judge one.

• Screw-down crown explainedscrew down crown

  A screw-down crown threads into the case to seal out water. Why dive watches use one, and the daily habit it asks of you.

• Exhibition caseback explainedexhibition caseback

  An exhibition caseback is a clear back that shows the movement. What you're looking at, and the trade-off against a solid back.

• What grey market watches aregrey market watch

  A grey market watch is genuine but sold outside the brand's authorized dealers. What that means for price, warranty, and risk.

• Box and papers meaningbox and papers watch

  Box and papers means a watch comes with its original packaging and documents. What a full set proves, and what it doesn't.

• Watch bezels explainedwatch bezel

  A bezel is the ring around a watch crystal. Fixed, dive, and GMT bezels explained, with how to read each one.

• What a field watch isfield watch

  A field watch is a simple, legible tool watch with military roots. Why it makes such a good everyday watch.

• What a dress watch isdress watch

  A dress watch is slim, quiet, and made for formal settings. The typical cues, and why it can work every day too.

• NATO straps explainednato strap

  A NATO strap threads behind the case, so the watch stays on if a spring bar fails. Why people love them, and how to fit one.

• Sapphire crystal on watchessapphire crystal watch

  Sapphire crystal resists scratches far better than mineral or acrylic, but it can still shatter. The practical trade-offs.

• Watch movements explainedwatch movement

  A watch movement is the engine inside the case: quartz, automatic, or manual-wind. How each works and how to choose.

• Power reserve explainedwatch power reserve

  Power reserve is how long a fully wound mechanical watch runs on its own, usually 38 to 80 hours. Why the number matters.

• Deployant clasps explaineddeployant clasp

  A deployant clasp is a folding buckle for leather and rubber straps. Comfort, security, and how it changes the look.

• Watch complications explainedwatch complication

  A complication is any function beyond hours and minutes, from a date window to a perpetual calendar. Which ones are worth it.

• What an homage watch ishomage watch

  An homage watch borrows the design of a famous model under its own name. When it makes sense, and how it differs from a fake.

• Manual-wind watches explainedmanual wind watch

  A manual-wind watch is wound by turning the crown. Why it's often thinner, and what the daily winding habit is like.

• Hacking seconds explainedhacking seconds

  Hacking seconds means the seconds hand stops when you pull the crown, so you can set the time exactly. Does it matter?

• Water resistance and ATM ratingswater resistance ATM

  What 3, 5, 10, and 20 ATM ratings really mean for splashing, swimming, and diving, and what they don't promise.

• What “Swiss made” means on a watchswiss made watch meaning

  Swiss made is a legal origin label with specific rules. What it signals about a watch, and what it doesn't.

• Watch bracelet end linksend links watch

  End links are the bracelet pieces that meet the case. Why good ones matter, and what happens when you switch to a strap.

• Watch caliber (calibre) explainedwatch caliber

  A caliber is the specific name or number of a watch movement. What it tells you and why collectors quote it.

• Dress watch vs sport watchdress watch vs sport watch

  Dress watches put slim elegance first, sport watches put toughness first. The differences, and the middle ground most people wear.

• What a watch rotor iswatch rotor

  The rotor is the half-moon weight that winds an automatic watch as you move. What you're seeing through the caseback.

• Watch lume explainedwatch lume

  Lume is the glow-in-the-dark material on watch hands and markers. Modern vs vintage, and what affects brightness.

• Chapter rings explainedchapter ring

  A chapter ring is the minute track around the edge of the dial. A small detail that changes how a watch looks.

• Fluted bezels explainedfluted bezel

  A fluted bezel has sharp ridges that catch the light. Where it came from, and one practical catch.

• Coin-edge cases explainedcoin edge case

  A coin-edge case has fine ridges along its side, like a coin. What it adds, and what it reveals on a used watch.

• Cushion case watchescushion case watch

  A cushion case is a soft square with rounded corners. How it wears compared with a round case of the same size.

• Integrated bracelets explainedintegrated bracelet

  An integrated bracelet flows straight out of the case. Why people love the look, and the big trade-off for strap lovers.

• Quick-release spring barsquick release spring bars

  Quick-release spring bars let you change straps by hand with no tools. When they're great, and when they won't work.

• Chronometer and COSC explainedchronometer COSC

  A chronometer has passed a standard accuracy test, often by COSC. What the certificate covers and how much it should count.

• What a GADA watch isgada watch meaning

  GADA means go anywhere, do anything: one versatile watch for most of life. What counts as one and when it's the right pick.

• What a diver watch iswhat is a diver watch

  A diver watch has a one-way bezel, strong water resistance, and bright lume. When it's a tool and when it's just a style.

• What a pilot watch iswhat is a pilot watch

  A pilot watch is a high-contrast tool watch with aviation roots. How it differs from field watches and flieger designs.

• What a tank watch iswhat is a tank watch

  A tank watch is a rectangular dress watch in the tradition of Cartier's Tank. The shape, how it fits, and when it's the right choice.