Seiko Cal. 0721 - 890

This Hand-Winding model from 1978 features a 40mm Stainless Steel case. Powered by the 0721 caliber with 21j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-6d21ad51e576]

Also known as: UFO, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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