Seiko Cal. 3861 - 256

Released in 1976, the Cal. 3861 with design code 256 was part of Seiko's domestic market collection. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-cf2ec2d59d61]

Also known as: Tuna, Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1976

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