Seiko Cal. 6637 - 403

Seiko 6637-403

This Hand-Winding model from 1974 features a 43mm PVD Black case. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ce6f2fb52e66]

Also known as: UFO, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
43mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
40m
Dial Color
Champagne
Jewels
23j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1974

Related Models

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