Seiko Cal. 6661 - 678

This Solar model from 1977 features a 35mm Hardlex-Coated Steel case. It features a Cream dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-43f10399240c]

Also known as: Helmet, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1977

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