Seiko Cal. 6690 - 437

This Automatic model from 1975 features a 44mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-d84f27c44e81]

Also known as: Helmet, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1975

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