Seiko Cal. 6631 - 855

This Hand-Winding model from 1986 features a 36mm Hardlex-Coated Steel case. Powered by the 6631 caliber with 20j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-36f852445f25]

Also known as: Goldfeather, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1986

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