Seiko Cal. 3865 - 723

Released in 1980, the Cal. 3865 with design code 723 was part of Seiko's domestic market collection. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-8ff1ee13efc8]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1980

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