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HBC004

Seiko

HBC004

Also sold as HBC004JJapan HBC004J1Japan

In production All HBC references →
Caliber
6R55
Case diameter
39.5mm
Water resistance
200 m
Power reserve
72h

Seiko HBC004: caliber 6R55, 39.5 mm case, 200 m water resistance.

Where to buy

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Specifications

Specifications from Seiko, Seiko, last seen 2026-09-21.

Movement

Caliber
6R55 All 6R55 watches →
Movement
Automatic
Power reserve
72h
Jewels
24

Case & crystal

Case material
Stainless steel (super hard coating)
Case diameter
39.5mm
Case thickness
12mm
Lug to lug
44.5mm
Lug width
20mm
Crystal
Curved sapphire crystal

Resistance

Water resistance
200 m
Magnetic resistance
4,800 A/m

Catalogue

Family
HBC
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Variants Same watch, different market or bracelet

Reference Edition Region Band Clasp Weight
HBC004J J Japan Calfskin leather Three-fold clasp with push button release 87g
HBC004J1 J1 Japan Cow leather Three-fold clasp with push button release —

More Seiko HBC references