Seiko Cal. 3815 - 850

This Automatic model from 1972 features a 35mm PVD Black case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-adc0124f5e7b]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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