Seiko Cal. 3891 - 764

This Solar model from 1988 features a 42mm PVD Black case. With its 20mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-d5698bee8e51]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1988

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