Seiko Cal. 6620 - 474

This Spring Drive model from 1989 features a 38mm Titanium case. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-8f82968592e2]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1989

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