Seiko Cal. 5639 - 553

This Automatic model from 1973 features a 44mm Titanium case. Powered by the 5639 caliber with 33j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-bbd8ab79304b]

Also known as: Tuna, Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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