Seiko Cal. 3818 - 641

This Hand-Winding model from 1999 features a 39mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-439e1648572c]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1999

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