Seiko Cal. 5648 - 550

The Seiko 5648-550 represents an important milestone in Seiko's 1986 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-027d5c4b9d97]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1986

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