Seiko Cal. 3870 - 423

The Seiko 3870-423 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-780448369fdd]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1972

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