Seiko Cal. 6660 - 398

This Spring Drive model from 1982 features a 40mm Titanium case. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-05109fcffba5]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1982

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