Seiko Cal. 6690 - 428

This Automatic model from 1974 features a 37mm PVD Black case. Powered by the 6690 caliber with 21j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-2d54c5558a7e]

Also known as: Panda, Goldfeather

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1974

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