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Generic mainspring for Jaeger‑LeCoultre Caliber 924 automatic movement. Swiss‑made, high‑grade alloy steel. Restores original 43‑hour power reserve. Aftermarket replacement for worn or broken original springs.
Precision‑wound for Caliber 924 – exact fit for 924 barrel.
High‑grade alloy steel – durable, fatigue‑resistant.
Restores 43‑hour power reserve and stable amplitude.
Drop‑in replacement – no modification to movement.
Affordable alternative to genuine JLC mainspring.
| Parameter | Value |
|---|---|
| Compatible caliber | Jaeger‑LeCoultre Caliber 924 |
| Power reserve | 43 hours |
| Movement frequency | 28,800 vph (4 Hz) |
| Jewels | 41 |
| Material | High‑grade alloy steel |
| Type | Aftermarket |
Replace worn or broken mainspring during service of JLC Caliber 924.
Suitable for Master Calendar, Master Control and other 924‑powered models.
Professional watch repair and restoration.
Q1: Genuine JLC part? No, generic aftermarket.
Q2: Which caliber? Jaeger‑LeCoultre Caliber 924 only.
Q3: What power reserve after replacement? 43 hours.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
