Seiko Cal. 5646 - 683

This Quartz model from 1966 features a 46mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-a6d44adf9a65]

Also known as: Navigator, Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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