Seiko Cal. 5648 - 646

The Seiko 5648-646 represents an important milestone in Seiko's 1990 lineup. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-7e14bc47c730]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1990

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