Seiko Cal. 6654 - 677

This Spring Drive model from 1978 features a 36mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-2370692c22d8]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1978

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