Seiko Cal. 6631 - 948

Seiko 6631-948

This Automatic model from 1980 features a 36mm Titanium case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e1716e455efc]

Also known as: Silverwave, Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
36mm
Case Thickness
15.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Navy
Jewels
32j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1980

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seikata-wm-e1716e455efc