Seiko Cal. 5655 - 307

The Seiko 5655-307 represents an important milestone in Seiko's 1980 lineup. Powered by the 5655 caliber with 34j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-5bb9a9a7e616]

Also known as: UFO, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1980

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