Seiko Cal. 5621 - 858

This Spring Drive model from 1965 features a 36mm Hardlex-Coated Steel case. Powered by the 5621 caliber with 34j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-dd3055e90d94]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1965

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