Seiko Cal. 4581 - 311

The Seiko 4581-311 represents an important milestone in Seiko's 1998 lineup. It features a Black dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-a762abcf5e9a]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1998

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