Seiko Cal. 3810 - 618

This Hand-Winding model from 1971 features a 40mm PVD Black case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-2472ffdf0b23]

Also known as: Tuna, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1971

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