Seiko Cal. 5621 - 411

This Spring Drive model from 1967 features a 44mm Titanium case. Powered by the 5621 caliber with 35j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-537ca9ee09b6]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1967

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