Seiko Cal. 3881 - 445

This Hand-Winding model from 1985 features a 39mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-6a8afdd2183e]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1985

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