Seiko Cal. 3851 - 890

This Hand-Winding model from 1991 features a 37mm Stainless Steel case. Powered by the 3851 caliber with 19j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-75bd6c01f548]

Also known as: Helmet, Crown

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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