Seiko Cal. 5658 - 931

The Seiko 5658-931 represents an important milestone in Seiko's 1997 lineup. It features a Cream dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-65f8d3636c28]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1997

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