Seiko Cal. 3870 - 959

The Seiko 3870-959 represents an important milestone in Seiko's 1967 lineup. Powered by the 3870 caliber with 25j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-5593123d5d49]

Also known as: Rally, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1967

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