Seiko Cal. 3880 - 379

Released in 1976, the Cal. 3880 with design code 379 was part of Seiko's domestic market collection. It features a Cream dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-4d5163ba09dd]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1976

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