Seiko Cal. 5621 - 841

The Seiko 5621-841 represents an important milestone in Seiko's 1976 lineup. Powered by the 5621 caliber with 35j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-8f408bf8944f]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1976

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