Seiko Cal. 3879 - 688

This Automatic model from 1991 features a 40mm Hardlex-Coated Steel case. Powered by the 3879 caliber with 18j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-8e82d0ac8247]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1991

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