Seiko Cal. 3891 - 304

The Seiko 3891-304 represents an important milestone in Seiko's 1972 lineup. Powered by the 3891 caliber with 29j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-e5c5e220b296]

Also known as: Turtle, UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1972

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