Seiko Cal. 3891 - 379

Released in 1973, the Cal. 3891 with design code 379 was part of Seiko's domestic market collection. Powered by the 3891 caliber with 27j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-f8a233697440]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1973

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