Seiko Cal. 5691 - 613

This Hand-Winding model from 1967 features a 38mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-ca0440bf1291]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1967

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