Seiko Cal. 6331 - 257

Seiko 6331-257

The 6331-257 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-23959640f58b]

Also known as: Bullhead, Helmet

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
10.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
200m
Dial Color
Green
Jewels
29j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1976

Related Models

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