Seiko Cal. 3870 - 555

The Seiko 3870-555 represents an important milestone in Seiko's 1983 lineup. Powered by the 3870 caliber with 30j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-6a71336e0c2d]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1983

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