Seiko Cal. 5657 - 931

This Spring Drive model from 1989 features a 39mm Stainless Steel case. It features a White dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-617bc2998bc9]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1989

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