Seiko Cal. 5666 - 280

This Spring Drive model from 1970 features a 40mm Titanium case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-1339a02c864c]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1970

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