Seiko Cal. 5661 - 898

This Automatic model from 1970 features a 39mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-13235869a123]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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