Seiko Cal. 3891 - 428

The Seiko 3891-428 represents an important milestone in Seiko's 1977 lineup. Powered by the 3891 caliber with 21j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-88ed08fa8280]

Also known as: Pogue, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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