Seiko Cal. 3870 - 870

The 3870-870 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-f06979d72261]

Also known as: Rally, Crown

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1987

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