Seiko Cal. 5650 - 663

This Automatic model from 1974 features a 39mm Titanium case. Powered by the 5650 caliber with 28j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-e7edcf8760a4]

Also known as: Bullhead, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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