Seiko Cal. 6331 - 938

The 6331-938 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-3dbe1618e419]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1991

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