Seiko Cal. 3813 - 909

The Seiko 3813-909 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-c96c9671435a]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1984

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