Seiko Cal. 3861 - 811

Released in 1966, the Cal. 3861 with design code 811 was part of Seiko's domestic market collection. With its 20mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-533a4aedb4fa]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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