Seiko Cal. 3870 - 501

The Seiko 3870-501 represents an important milestone in Seiko's 1990 lineup. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-8b9f17628a77]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1990

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