Seiko Cal. 3821 - 939

This Automatic model from 1971 features a 40mm PVD Black case. It features a Champagne dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-6bd4f3b71484]

Also known as: Rally, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1971

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