Seiko Cal. 6389 - 657

This Automatic model from 1977 features a 45mm Hardlex-Coated Steel case. It features a Black dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-1237a0382bbd]

Also known as: Monster, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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