Seiko Cal. 3879 - 307

This Hand-Winding model from 1979 features a 38mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-3ce57a8b6e7e]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1979

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