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The movement is the engine of a watch — it controls how time is measured, how the second hand sweeps, and how often the watch needs servicing. Before ordering a watch from any catalog, understanding the movement type helps you set accurate expectations for accuracy, maintenance cost, and resale value. This guide breaks down the three main categories.
Quartz Movement
A quartz crystal oscillates at a precise frequency when an electrical current passes through it. A battery powers the circuit, and a small stepper motor moves the hands.
Accuracy: Excellent — typically within 15–30 seconds per month. Quartz is more accurate than any mechanical movement at any price point.
Maintenance: Battery replacement every 1–3 years. Beyond that, quartz movements are largely maintenance-free. A full service (cleaning and lubrication) is rarely needed and often costs more than the movement is worth.
Pros: Affordable, extremely accurate, low maintenance, thin profile allows for slimmer watch cases.
Cons: The ticking motion (one step per second) lacks the smooth sweep that many watch enthusiasts prefer. No craftsmanship prestige. Batteries eventually leak if left dead inside the case.
What to ask in a catalog: Whether the battery is a standard size (SR626SW, SR920SW, etc.) or a specialty cell. Whether the movement is Swiss-made (ETA, Ronda) or Japanese (Seiko Epson, Miyota) — both are reliable, but Swiss quartz often commands a price premium.
Mechanical (Hand-Wound) Movement
A mainspring stores energy, wound manually by turning the crown. As the spring unwinds, it drives a series of gears that move the hands. An escapement regulates the release of energy, typically at 18,000–28,800 vibrations per hour.
Accuracy: Good but not quartz-level — typically within 5–15 seconds per day for a well-regulated movement. Accuracy varies with temperature, position, and how fully the spring is wound.
Maintenance: Full service every 3–5 years (cleaning, lubrication, regulation). Costs vary widely — from $50 for a basic movement to several hundred for a complicated one.
Pros: Smooth sweeping second hand. Craftsmanship appeal — the movement is a mechanical work of art. Can last generations with proper service. Retains value better than quartz.
Cons: Requires daily winding. Less accurate than quartz. More expensive to buy and maintain. Sensitive to shocks and magnetism.
What to ask in a catalog: The beat rate (vibrations per hour — higher means smoother sweep but faster wear). Whether the movement has a power reserve indicator. How many jewels are used as bearings (typically 17–25 for a basic mechanical; more jewels suggest additional features like date or automatic winding).
Automatic (Self-Winding) Movement
An automatic movement is a mechanical movement with a weighted rotor that spins as the wearer’s wrist moves, winding the mainspring automatically. It is the most popular mechanical type for modern watches.
Accuracy: Same range as hand-wound mechanical — 5–15 seconds per day. Some high-end automatic movements are certified chronometers (COSC), guaranteeing -4 to +6 seconds per day.
Maintenance: Same as mechanical — full service every 3–5 years. The rotor mechanism adds a small amount of complexity but does not significantly change the service interval.
Pros: No manual winding needed if worn regularly. Same craftsmanship and smooth sweep as mechanical. Power reserve typically 38–48 hours, so the watch continues running overnight.
Cons: Will stop if not worn for more than the power reserve period. Thicker than hand-wound or quartz due to the rotor. More expensive than both. Sensitive to magnetism (can be demagnetized by a watchmaker).
What to ask in a catalog: The power reserve in hours (longer is better — some modern movements offer 70+ hours). Whether the rotor is ball-bearing mounted (smoother and more durable). Whether the movement is an in-house design or a widely used caliber (ETA 2824, Seiko NH35, Miyota 9015 — these are reliable workhorses).
Quick Comparison
| Feature | Quartz | Mechanical | Automatic |
|---|---|---|---|
| Accuracy | ±15 sec/month | ±10 sec/day | ±10 sec/day |
| Maintenance | Battery every 2 years | Service every 3–5 years | Service every 3–5 years |
| Winding | None | Manual daily | Self-winding |
| Smooth sweep | No (ticks) | Yes | Yes |
| Resale value | Lower | Higher | Higher |
| Price range | Budget–mid | Mid–high | Mid–high |
Which Movement Suits You
For everyday practicality, quartz is unbeatable — accurate, reliable, and nearly maintenance-free. For appreciation of craftsmanship and long-term value, mechanical and automatic movements offer an experience that quartz cannot replicate.
When ordering from a catalog, always confirm the movement type and, if mechanical, the specific caliber. The same watch case can house vastly different movements, and the movement — not the exterior — is what determines long-term satisfaction.
For more on watch sourcing specifics, see our complete watch sourcing guide.