Seiko Cal. 3811 - 402

The 3811-402 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-572dafe3d7d9]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1977

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