Seiko Cal. 3881 - 727

The Seiko 3881-727 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-633b5b78a1e4]

Also known as: UFO, Bellmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1968

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