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Movements

A movement is the engine, and almost every other decision follows from it. These pages cover what is inside the case: how a mainspring, gear train, escapement and balance turn stored energy into a steady beat, what changes when the winding is automatic rather than manual, how quartz and Spring Drive solve the same problem by other means, and what movement finishing is and is not worth paying for.

124 pages on this subject.

Answers

Guides

  • Automatic versus manual winding

    How a rotor, reversing gears and a slipping bridle wind a watch, why an automatic cannot be overwound, and when a hand-wound movement is the better choice.

    Guide · 10 min read

  • Escapements: the hardest problem in watchmaking

    Every escapement must lock the gear train and push the balance without wasting energy. Here is why those aims conflict, and how each design has failed or won.

    Guide · 13 min read

  • How a mechanical watch works

    A mechanical watch turns a wound spring into a steady beat. Here is the whole chain, from mainspring to escapement to hands, and what each part actually does.

    Guide · 12 min read

  • How a watch is actually made

    Ebauches, CNC cases, pad-printed dials and casing up in a clean room. How watches are really produced, who supplies whom, and where the retail price goes.

    Guide · 10 min read

  • Microbrands and independents: what you are really buying

    What a microbrand actually is, how it differs from an independent watchmaker, why the specification looks so good for the money, and where the real risks sit.

    Guide · 11 min read

  • Movement finishing: what you are actually paying for

    Anglage, black polishing, Cotes de Geneve and perlage explained, with how to tell hand finishing from machine work through a caseback at any price.

    Guide · 10 min read

  • Quartz versus mechanical: an honest comparison

    How quartz and mechanical watches really differ on accuracy, cost, servicing and longevity, with real figures and no snobbery about either technology.

    Guide · 10 min read

  • Smartwatches and mechanical watches: a fair comparison

    Capability, accuracy, lifespan, repairability, privacy and ten-year cost, compared without tribalism. What each object is for, and who each one suits.

    Guide · 13 min read

Brands

  • Breitling

    Who owns Breitling, what the B01 chronograph gives you that the ETA and Sellita bases do not, how the Navitimer slide rule works, and how large these wear.

    Brand · 11 min read

  • Citizen

    Citizen owns Miyota and supplies much of the industry. What Eco-Drive changes about servicing, what the accuracy claims mean, where the range falls short.

    Brand · 10 min read

  • Grand Seiko

    Why Grand Seiko split from Seiko in 2017, what the Shizukuishi and Shinshu studios build, how its accuracy standard compares to COSC, and what it loses used.

    Brand · 11 min read

  • IWC Schaffhausen

    An American-founded Swiss manufacture on the Rhine. Ownership, the pilot's watch lineage, soft-iron magnetic shielding, the calibers and the running costs.

    Brand · 12 min read

  • Jaeger-LeCoultre

    The manufacture that supplied movements to Audemars Piguet, Patek Philippe and Vacheron. Ownership, the Reverso, the 1000 Hours Control, and running costs.

    Brand · 12 min read

  • Longines

    Longines sits between Tissot and Omega in the Swatch Group. What the exclusive L888 calibers and silicon balance springs buy, and what the Spirit costs.

    Brand · 9 min read

  • NOMOS Glashütte

    NOMOS builds almost all of its calibers in Glashütte, including the escapement. What the DUW 3001 and DUW 6101 give you, and the parts question that follows.

    Brand · 11 min read

  • Omega

    Swatch Group ownership, the Co-Axial escapement George Daniels invented, what METAS Master Chronometer certification tests, and what NASA certified in 1965.

    Brand · 10 min read

  • Orient

    Orient belongs to Seiko Epson, not to the company that sells Seiko watches. What the F6 calibers do, which ones hack, and how the Bambino and Kamasu compare.

    Brand · 10 min read

  • Oris

    Oris has been independent since 1982 and builds only mechanical watches. What the Calibre 400 actually delivers, and why most of the range is Sellita.

    Brand · 11 min read

  • Seiko

    Who owns Seiko, what the 4R, 6R and 8L calibers actually promise, why the SKX ended, what replaced it, and the alignment problems nobody at Seiko denies.

    Brand · 11 min read

  • TAG Heuer

    TAG Heuer under LVMH: the Heuer racing chronographs, Calibre Heuer 02 against the Sellita-based movements, connected watches, and the depreciation reality.

    Brand · 10 min read

  • Tissot

    Who owns Tissot, what the Powermatic 80 gives up to reach 80 hours, what the PRX and Seastar cost new and used, and when a Certina or Hamilton fits better.

    Brand · 10 min read

  • Tudor

    Rolex owns Tudor. Since 2015 it has built its own MT calibers at Kenissi, and some references now carry METAS certification. What that is worth in practice.

    Brand · 10 min read

  • Zenith

    Zenith owns one of watchmaking's great movements and one of its best stories. Who owns the brand, what the El Primero really is, and what it costs to own.

    Brand · 11 min read

Models

  • Grand Seiko Snowflake (SBGA211)

    The SBGA211 explained: how Spring Drive works without a battery, why the seconds hand glides, what the titanium case weighs, and what it loses secondhand.

    Model · 11 min read

  • Nomos Tangente 35 and 38

    Which Tangente reference has which caliber, how the 35 mm and 38 mm wear, what hand winding costs you daily, and why the water rating rules out swimming.

    Model · 11 min read

  • Orient Bambino

    The Bambino name covers several calibers. What Orient publishes for the current F672: 40 hours, hacking, hand winding, 30 m, and where the finishing stops.

    Model · 11 min read

  • Seiko Alpinist

    The 6R35 Alpinist measured: 39.5 mm, 46.4 mm lug to lug, 70 hour reserve, 20 bar. How the compass ring works, and why the 38 mm SARB017 now costs more.

    Model · 11 min read

  • Tissot PRX

    The PRX is two watches in one case. What separates the quartz from the Powermatic 80, how the bracelet limits strap choice, and how 35 and 40 mm differ.

    Model · 10 min read

Movements

  • Citizen Eco-Drive

    Citizen's light-powered quartz explained: the light levels it actually needs, the reserve in darkness, power save, and what the rechargeable cell costs later.

    Movement · 11 min read

  • ETA 2824-2

    What ETA actually publishes for the 2824-2: 25 jewels, 4.60 mm high, 28,800 vph, the four execution grades, what a service costs, and the faults it develops.

    Movement · 11 min read

  • ETA 2892-A2

    The 2892-A2 is 3.60 mm high against the 2824-2's 4.60 mm, with 21 jewels and a longer power reserve. What that buys, what it costs and where it is fragile.

    Movement · 10 min read

  • Grand Seiko caliber 9S65

    Grand Seiko's 72-hour automatic: the SPRON hairspring alloy, MEMS-made escapement parts, how the GS Standard compares with COSC, and servicing it abroad.

    Movement · 11 min read

  • Miyota 8215

    Citizen's cheapest widely used automatic: the specification from Miyota's own sheet, why the seconds hand stutters, the hacking question, and what it costs.

    Movement · 10 min read

  • Miyota 9015

    Citizen Miyota publishes 3.90 mm, 28,800 vph and minus 10 to plus 30 seconds a day for the 9015. The thinness, the rotor noise, and the NH35 comparison.

    Movement · 10 min read

  • Omega Co-Axial Master Chronometer caliber 8800

    What the co-axial escapement really changes about friction and oil, what the Si14 silicon hairspring buys, and what METAS actually tests at 15,000 gauss.

    Movement · 11 min read

  • Powermatic 80 (ETA C07)

    The 80 hour Swatch Group automatic: where the reserve comes from, the molded escapement argument, the regulator problem and the honest verdict on servicing.

    Movement · 12 min read

  • Rolex caliber 3235

    The Chronergy escapement, the Parachrom hairspring, 70 hours of reserve, and why the minus 2 to plus 2 second Superlative figure is not a COSC figure.

    Movement · 11 min read

  • Seiko 4R35 and 4R36

    What Seiko publishes for the 4R35 and 4R36, how they relate to the NH35 and NH36 sold to other brands, and the differences that are real rather than folklore.

    Movement · 10 min read

  • Seiko 6R35

    Seiko publishes plus 25 to minus 15 seconds a day and 70 hours of reserve for the 6R35. What that buys over the 4R36, and whether it justifies the gap.

    Movement · 10 min read

  • Seiko NH35 (NH35A)

    The NH35A specification from Time Module: 24 jewels, 21,600 vph, 41 hours, minus 20 to plus 40 seconds a day, and why replacing it beats servicing it.

    Movement · 11 min read

  • Seiko Spring Drive: the 9R caliber family

    A mainspring drives it, a quartz crystal regulates it, and there is no escapement. How Spring Drive works, what a second a day means, and who can fix it.

    Movement · 11 min read

  • Sellita SW200-1

    Sellita publishes what ETA does not: a rate table per grade. The SW200-1 specification, why it exists, and how far its parts interchange with the ETA 2824-2.

    Movement · 12 min read

  • Sellita SW300-1

    The thin Sellita automatic: 3.60 mm, 4 Hz, 56 hours, the Elabore, Top and Chronometre rate grades from the data sheet, servicing costs and known weak points.

    Movement · 11 min read

  • Valjoux 7750

    The ETA 7750 is 30.00 mm wide and 7.90 mm high with a cam-switched chronograph. Why it makes thick watches, why the rotor wobbles, and what a service costs.

    Movement · 11 min read

Compare

  • Automatic vs manual winding

    A rotor buys convenience and costs thickness, weight and parts. A manual movement is thinner and more involving. How the two really differ in use.

    Comparison · 9 min read

  • COSC vs METAS vs in-house accuracy standards

    COSC tests the bare movement to minus 4 and plus 6 seconds a day. METAS tests the finished watch to 0 to plus 5. Brands test their own. What each is worth.

    Comparison · 9 min read

  • Eco-Drive vs Seiko Solar

    Two light-powered quartz systems that work the same way. Accuracy, running time in the dark, what the rechargeable cell costs, and which range suits you.

    Comparison · 11 min read

  • ETA 2824-2 vs Sellita SW200-1

    Why Sellita built a copy of the 2824-2, what actually differs, how far the parts interchange, the grade ladders side by side and whether it costs you resale.

    Comparison · 10 min read

  • GMT vs world timer watches

    A GMT tracks two or three zones with a 24-hour hand. A world timer shows all 24 at once. Which suits your travel, and why caller and traveler GMTs differ.

    Comparison · 9 min read

  • In-house vs third party movements

    What in-house actually means, why third party movements exist, and which one costs you less to own over twenty years.

    Comparison · 9 min read

  • Quartz vs automatic watches

    Quartz wins on accuracy and running cost. Automatics win on repairability and the object itself. Here is the size of each gap, in seconds and dollars.

    Comparison · 9 min read

  • Seiko NH35 vs Miyota 9015 vs Sellita SW200

    Beat rate, power reserve, stated accuracy, rotor noise and parts and service cost for the three workhorse automatics under most affordable watches.

    Comparison · 10 min read

  • Seiko vs Citizen

    Japan's two vertically integrated giants. Seiko owns the mechanical argument, Citizen owns the accuracy and no-maintenance argument. Where each one wins.

    Comparison · 10 min read

  • Seiko vs Orient

    Two Japanese mechanical brands with a shared ancestor. How the Orient F6 calibers compare with Seiko's 4R family, and where each one is the better buy.

    Comparison · 10 min read

  • Smartwatch vs mechanical watch

    Capability, accuracy, repair cost, privacy and ten-year ownership compared. One object is consumed on a schedule, the other is maintained indefinitely.

    Comparison · 9 min read

  • Spring Drive vs a mechanical watch

    A mainspring with a quartz brake instead of an escapement: how Spring Drive works, what it gains in accuracy, and what it costs in repairability and price.

    Comparison · 11 min read

  • Tissot vs Hamilton

    Two Swatch Group siblings built on the same ETA architecture. Powermatic 80 against H-10 and H-50, PRX against Khaki Field, and what each costs to own.

    Comparison · 11 min read

Prices

  • What a first mechanical watch costs

    What a first mechanical watch costs in 2026, band by band from $100 to $2,000, and exactly what each band buys in movement, crystal, sealing and bracelet.

    Price guide · 10 min read

Problems

  • My quartz watch has stopped

    A stopped quartz watch is usually a dead battery, but four other faults look identical. How to tell them apart before you pay for a battery that will not help.

    Fix · 6 min read

  • The automatic will not hand wind

    Many automatic movements cannot be hand wound at all, by design. Which ones, how to confirm yours, and what a genuine winding failure actually looks like.

    Fix · 11 min read

  • The crown is stuck and will not turn or pull out

    A crown that will not turn or will not pull out points at a jammed keyless works, a broken stem or corrosion. What is safe to try and what needs a bench.

    Fix · 5 min read

  • The hands do not line up with the markers

    Hands that miss the markers are usually fitted slightly off, which is cosmetic. A gap that grows over a day is a slipping cannon pinion, which is not.

    Fix · 10 min read

Tools

  • Beat rate converter

    Convert watch beat rates: vibrations per hour to hertz, beats per second, seconds hand steps and beats per day.

    Watch tool · 7 min read

Glossary

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