Seiko Cal. 5639 - 150

The Seiko 5639-150 represents an important milestone in Seiko's 1967 lineup. Powered by the 5639 caliber with 22j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-4531eb9677fb]

Also known as: UFO, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1967

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