Seiko Cal. 3871 - 123

The Seiko 3871-123 represents an important milestone in Seiko's 1968 lineup. Powered by the 3871 caliber with 29j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-e0a341e3e9f2]

Also known as: UFO, Sea Horse

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1968

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