Seiko Cal. 3866 - 820

Released in 1980, the Cal. 3866 with design code 820 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-bd34cf88470a]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1980

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