Seiko Cal. 6621 - 947

Released in 1979, the Cal. 6621 with design code 947 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-02d0bef8bec4]

Also known as: Sumo, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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