Seiko Cal. 3866 - 678

The Seiko 3866-678 represents an important milestone in Seiko's 1999 lineup. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-07c3d0c9fd5d]

Also known as: Sumo, Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1999

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