Seiko Cal. 6621 - 974

This Spring Drive model from 1977 features a 40mm Two-Tone case. It features a Burgundy dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-3637c2505186]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1977

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