Seiko Cal. 5663 - 646

The Seiko 5663-646 represents an important milestone in Seiko's 1975 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-1941308aef7a]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1975

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