Seiko Cal. 0720 - 644

The Seiko 0720-644 represents an important milestone in Seiko's 1982 lineup. With its 20mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-0bdf3794a81d]

Also known as: Sea Horse, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1982

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