Seiko Cal. 6645 - 501

This Spring Drive model from 1984 features a 39mm Stainless Steel case. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-9a013be937c6]

Also known as: Tuna, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1984

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