Seiko Cal. 5621 - 135

The Seiko 5621-135 represents an important milestone in Seiko's 1979 lineup. Powered by the 5621 caliber with 20j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-e1a5b0e92322]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1979

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