Seiko Cal. 3860 - 740

The 3860-740 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-31f240e0a7f4]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1972

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