Seiko Cal. 3870 - 100

The 3870-100 is a sought-after Automatic piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-de5402ba2b23]

Also known as: Samurai, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1987

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