Seiko Cal. 3873 - 660

The Seiko 3873-660 represents an important milestone in Seiko's 1970 lineup. Powered by the 3873 caliber with 25j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-cee1ca4b4870]

Also known as: UFO, Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1970

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