Seiko Cal. 3864 - 256

The Seiko 3864-256 represents an important milestone in Seiko's 1999 lineup. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-212e49100afd]

Also known as: Sumo, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1999

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