NH35 Automatic vs. VH31 Quartz -Movement Comparison

Both the NH35 and VH31 are popular choices in custom watches, but they offer very different experiences. Here’s a side‑by‑side breakdown to help customers understand the strengths of each.

NH35 Automatic vs. VH31 Quartz -Movement Comparison

Feature	NH35 A automatic	VH31 Quartz
Power Source	Self‑winding mechanical movement (no battery)	Battery‑powered quartz
Second Hand Motion	Smooth mechanical sweep	4‑tick‑per‑second “sweep‑style” motion
Accuracy	−20 to +40 sec/day (can be regulated)	±15 sec/month
Maintenance	Service every 4–7 years; fully repairable	Battery change every 2–3 years; low maintenance
Durability	Highly robust; proven in divers and field watches	Very reliable; fewer moving parts
Weight & Feel	Heavier, traditional mechanical feel	Lighter, slimmer, everyday‑friendly
Cost	Higher due to mechanical complexity	More affordable
Best For	Enthusiasts who want a true mechanical watch	Wearers who want accuracy and low upkeep

VH31 movement seen from the back

Seiko automatic movement (Bottom)