Seiko Cal. 3821 - 713

This Spring Drive model from 1979 features a 42mm PVD Black case. With its 20mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-bf5e8f4d7944]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1979

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