Seiko Cal. 3880 - 641

Released in 1978, the Cal. 3880 with design code 641 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-eafa381fd01d]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1978

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