Seiko Cal. 3871 - 201

The Seiko 3871-201 represents an important milestone in Seiko's 1969 lineup. Powered by the 3871 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-d22928e09037]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1969

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