Seiko Cal. 6331 - 940

Seiko 6331-940

The 6331-940 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-6aae9e9067ab]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
10.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
White
Jewels
27j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1979

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