Seiko Cal. 3860 - 421

The Seiko 3860-421 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-224bc6c0f389]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1979

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