What Is a Watch Movement Mainspring Type: Why It Matters
作者: Funny Items
发布时间: 2026-08-21 10:32:23
查看数: 70
The Power Source
The mainspring type affects power reserve and reliability.
Mainspring Types
- Standard: 40-50 hours power reserve
- Extended: 70-80 hours power reserve
- Double: 100+ hours power reserve
Why It Matters
Longer mainspring means longer power reserve and less frequent winding.