Seiko Cal. 4577 - 920

This Spring Drive model from 1987 features a 37mm Two-Tone case. It features a Silver dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-dbc5f5b7c04d]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1987

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