Seiko Cal. 6643 - 355

This Hand-Winding model from 1965 features a 34mm Two-Tone case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-0974d0b5c18f]

Also known as: Silverwave, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1965

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