Seiko Cal. 3888 - 257

This Hand-Winding model from 1983 features a 37mm Gold-Plated case. Powered by the 3888 caliber with 24j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-4c21aabcd5f0]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1983

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