Article: Mechanical vs Quartz Watches: What’s the Real Difference?

Mechanical vs Quartz Watches: What’s the Real Difference?

Two hearts, two philosophies: mechanical vs quartz.
When choosing a watch, one of the biggest decisions comes down to what’s inside: a mechanical movement or a quartz movement. Both serve the same purpose — keeping time — but how they do it, and who they’re best suited for, can be very different.
1. What Is a Mechanical Movement?
A mechanical movement relies entirely on gears, springs, and precise mechanics — no battery involved. It is powered by a mainspring, which stores energy and slowly releases it through an escapement and balance wheel.
- Reliable performance
- 41-hour power reserve
- Hand-winding and hacking seconds
- Proven durability in the field

2. What Is a Quartz Movement?
Quartz watches are powered by a battery and use a vibrating quartz crystal to keep time — typically accurate to within ±15 seconds per month.
- Miyota OS20: A chronograph quartz movement with stopwatch functionality, widely used in sporty or tactical watches.
- Miyota 2315: A classic 3-hand quartz movement with date, known for simplicity and long battery life.

3. Key Differences at a Glance
| Feature | Mechanical Watch (e.g. NH35) | Quartz Watch (e.g. OS20, 2315) |
|---|---|---|
| Power Source | Wound mainspring | Battery |
| Accuracy | ±20-40 sec/day (factory spec) | ±15 sec/month |
| Movement Feel | Smooth sweeping seconds | 1 tick per second |
| Maintenance | Service every 3–5 years | Battery change every 1–3 years |
| Features | Traditional, mechanical beauty | Chronograph, date, multi-function |
| Price | Generally higher | Usually lower |
| Emotional Appeal | Collector’s item, heritage | Convenience, practicality |
4. Who Are They For?
Mechanical watches (like NH35):
Quartz watches (like OS20 / 2315):
5. Final Thoughts









