Seiko Cal. 6310 - 392

This Spring Drive model from 1972 features a 40mm PVD Black case. Powered by the 6310 caliber with 31j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-e65ba4b8370e]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1972

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