Seiko Cal. 6397 - 738

This Hand-Winding model from 1971 features a 40mm Gold-Plated case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-cd94ba6b97a1]

Also known as: Tuna, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1971

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