Seiko Cal. 3870 - 423

The Seiko 3870-423 represents an important milestone in Seiko's 1987 lineup. With its 20mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-64f17a8bc187]

Also known as: Crown, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1987

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