Seiko Cal. 6639 - 367

Seiko 6639-367

This Automatic model from 1969 features a 44mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-972b436ae36c]

Also known as: UFO, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Green
Jewels
32j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1969

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