Seiko Cal. 6624 - 309

This Spring Drive model from 1978 features a 38mm Stainless Steel case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-c0b6187b4a92]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1978

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