Seiko Cal. 3817 - 145

The Seiko 3817-145 represents an important milestone in Seiko's 1980 lineup. Powered by the 3817 caliber with 19j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-235e1d91c0f7]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1980

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