Seiko Cal. 6645 - 346

This Quartz model from 1978 features a 46mm Two-Tone case. With its 21mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-33ecb47b3c5b]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

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