Seiko Cal. 3813 - 672

The Seiko 3813-672 represents an important milestone in Seiko's 1998 lineup. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-659c65efc067]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1998

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