Swiss Made Watch MAINSPRINGS By Size Manual Wind Watches Repair Parts Watchmaker

Swiss-made steel mainspring for manual-wind watch movements, sized to the exact height, thickness, length and barrel diameter you need.

⭐ At a glance

📏 Sized in millimetres: Height x Thickness (strength) x Length x Barrel Diameter

✅ Fits manual wind (hand-wound) movements from ETA, FHF, Omega, Ronda and Seiko

📦 One mainspring supplied

✔️ New Swiss-made steel mainspring

Material: Steel

Specifications

• Type: Mainspring
• Compatible Brand: ETA, FHF, Omega, Ronda, Seiko
• Material: Steel

✅ Fits

Made for manual wind movements only — not automatics. Suitable for a range of calibres from ETA, FHF, Omega, Ronda and Seiko; choose the size that matches your movement's original mainspring measurements (height x thickness x length x barrel diameter).

⚠️ Please check your movement's exact mainspring dimensions before ordering — mainsprings are matched by size, not by brand alone, and fitting the wrong height, thickness, length or barrel diameter will prevent correct operation.