Seiko Cal. 5621 - 873

The Seiko 5621-873 represents an important milestone in Seiko's 1970 lineup. Powered by the 5621 caliber with 18j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-2355e62d7996]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1970

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