Seiko Cal. 6616 - 637

This Solar model from 1968 features a 37mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-96401df0d983]

Also known as: Monster, Sea Horse

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1968

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