Seiko Cal. 3815 - 631

The Seiko 3815-631 represents an important milestone in Seiko's 1997 lineup. Powered by the 3815 caliber with 19j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-eb213a68c2eb]

Also known as: Goldfeather

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1997

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