Seiko Cal. 6389 - 657

Seiko 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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