Seiko Cal. 3891 - 166

Released in 1977, the Cal. 3891 with design code 166 was part of Seiko's domestic market collection. Powered by the 3891 caliber with 24j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-6f4662c4021e]

Also known as: Sumo, Pogue

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1977

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