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Generic circuit block for Hattori YM92 quartz chronograph (also fits Seiko 7T92). This PCB controls timekeeping, 3‑sub‑dial chronograph (1/20s, hour/min totalizer, small seconds), and analog date. Aftermarket replacement for failed or corroded original modules.
32,768 Hz oscillator – precise ±20 sec/month
Drives 1/20s (12h), hour/min totalizer (6h), small seconds (9h), central chrono seconds, and date (3h)
Low battery indicator (EOL): seconds jump every 2 sec
Interchangeable with Seiko 7T92 circuit
Drop‑in replacement, no modification
| Parameter | Value |
|---|---|
| Calibers | Hattori YM92, Seiko 7T92 |
| Battery | 395 / SR927SW |
| Battery life | ~3 years |
| Jewels | 0 |
| Sub‑dials | 1/20s@12, hr/min@6, small sec@9 |
| Date | 3 o‘clock |
| Type | Aftermarket |
Replace failed PCB after battery leak or electrical fault in YM92/7T92 watches.
Repair chronograph reset issues or intermittent timekeeping.
Professional service for microbrand and affordable chronographs.
Q1: Genuine Seiko part?
No, aftermarket generic.
Q2: Which calibers?
YM92, 7T92, YM92A.
Q3: Quality?
Good from reputable suppliers.
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.
