Seiko Cal. 7055 - 639

The Seiko 7055-639 represents an important milestone in Seiko's 1978 lineup. Powered by the 7055 caliber with 27j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-d976448f9c2d]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1978

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