Watch Repair Overview
A watch is part jewelry, part precision machine, and it needs occasional care to keep both roles working. Some repairs are quick and cheap; others are involved and best left to a trained watchmaker. This overview explains the common services — from a battery swap to a full movement overhaul — what affects the cost, and how to tell when a watch is worth servicing versus replacing.
The short version
- Battery and band work are simple, low-cost services.
- Mechanical watches need periodic full servicing to run well.
- Opening a water-resistant watch means the seals should be renewed.
- The movement type drives most of the cost and complexity.
- Sentimental and fine watches are usually worth professional service.
Quartz vs. mechanical: why it matters
Watches fall into two broad families, and the difference shapes every repair conversation. Quartz watches run on a battery and are generally simpler and cheaper to service — the most common need is a new battery. Mechanical watches, whether hand-wound or automatic, run on an intricate assembly of tiny parts that needs periodic cleaning, oiling, and adjustment to keep good time. Knowing which kind you own tells you roughly what to expect in both frequency and cost of service.
Common services, simplest first
| Service | What it involves | Relative cost |
|---|---|---|
| Battery replacement | New cell in a quartz watch | Low |
| Band or link adjustment | Sizing or replacing a strap | Low |
| Crystal replacement | Swapping a scratched or cracked face | Low to moderate |
| Seal / gasket renewal | Restoring water resistance | Moderate |
| Movement service | Clean, oil, and regulate the mechanism | Moderate to high |
| Full overhaul | Complete disassembly and restoration | High |
A battery change is the everyday errand of watch care. Band sizing and crystal replacement are also relatively straightforward. The bigger jobs — renewing seals and servicing the movement — require more skill, more time, and specialized tools.
Water resistance is not permanent
Many people assume a water-resistant watch stays that way forever, but the seals that keep water out are made of materials that age and compress over time. Any time a watch is opened — even for a battery — those gaskets should be checked and the water resistance re-tested and re-sealed if the watch is meant to be worn near water. If keeping your watch water-resistant matters, ask specifically for a pressure test after any service that opens the case.
Servicing a mechanical watch
Mechanical watches need periodic full servicing, in which a watchmaker disassembles the movement, cleans every part, replaces worn components, re-oils, reassembles, and regulates the timing. This is skilled, time-consuming work and is priced accordingly. Skipping it lets old, dried lubricant and accumulated wear damage parts, turning a routine service into an expensive repair. Think of it like maintenance on a fine machine: done on schedule, it keeps a good watch running for generations.
Pro tip — use a qualified watchmaker for anything mechanical or valuable
A battery in a modest quartz watch can be handled almost anywhere, but a mechanical, vintage, or fine watch deserves a trained watchmaker with the right tools. Opening a good watch carelessly can damage delicate parts or ruin water resistance. For anything sentimental or high-value, the extra care of a specialist is worth it.
Repair or replace?
For an inexpensive fashion watch, a costly repair rarely makes sense — replacement is often cheaper. For a quality, vintage, or sentimental watch, servicing almost always wins, because a well-made movement can run for decades with proper care and the piece may hold or grow in value. When you are unsure, ask a watchmaker for an honest assessment of what the repair costs, what the watch is worth, and whether the work is a one-time fix or the start of ongoing needs.
FAQ
How often does a mechanical watch need servicing?
Every several years is a common guideline, though it varies by watch and use. Regular servicing keeps the movement clean and well-lubricated; skipping it lets wear accumulate and can turn routine maintenance into a costly repair.
Why does my watch need new seals after a battery change?
Opening the case breaks the water-resistant seal, and the gaskets age over time regardless. To keep water resistance, the seals should be checked and the watch pressure-tested after any service that opens it.
Can I replace a watch battery myself?
For a simple, non-water-resistant quartz watch, some people do. But opening a water-resistant or fine watch risks damaging seals or delicate parts, so those are better left to a professional who can re-test the seal afterward.
Is it worth repairing an old watch?
It depends on the watch. Quality, vintage, and sentimental watches are usually worth servicing because a good movement lasts for decades. Inexpensive fashion watches are often cheaper to replace than to repair.
General information — gemstone values, prices, and appraisals vary widely; consult a certified gemologist or independent appraiser for specifics.
