Seiko Cal. 3851 - 671

The 3851-671 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3851 caliber with 27j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-d7bfa12bd059]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1982

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