Seiko Cal. 6658 - 604

This Hand-Winding model from 1980 features a 37mm Gold-Plated case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d50497f6b0ef]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1980

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