Seiko Cal. 6331 - 371

Released in 1967, the Cal. 6331 with design code 371 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-4bdd1733ab3f]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1967

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