Seiko Cal. 3860 - 256

Released in 1982, the Cal. 3860 with design code 256 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-edaf32fd848f]

Also known as: Navigator

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1982

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