Seiko Cal. 0764 - 644

This Solar model from 1986 features a 40mm PVD Black case. Powered by the 0764 caliber with 25j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-be1800f7e203]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1986

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