Seiko Cal. 3875 - 637

The Seiko 3875-637 represents an important milestone in Seiko's 1976 lineup. Powered by the 3875 caliber with 26j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-32dc886b4340]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1976

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