Seiko Cal. 6661 - 557

This Automatic model from 1977 features a 41mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-e19daa5e5d97]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1977

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