Seiko Cal. 6642 - 333

This Solar model from 1978 features a 37mm Hardlex-Coated Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-df2860b6cb51]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1978

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