Seiko Cal. 3811 - 317

The 3811-317 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-137ab3558caa]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1972

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