Seiko Cal. 5691 - 438

Seiko 5691-438

This Automatic model from 1973 features a 39mm Two-Tone case. It features a Champagne dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-28ec0b33fdef]

Also known as: Monster, Navigator

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
39mm
Case Thickness
11.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Champagne
Jewels
17j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1973

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