Seiko Cal. 3820 - 649

The Seiko 3820-649 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-50fc53b3d547]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1985

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