Seiko Cal. 3870 - 131

The 3870-131 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3870 caliber with 22j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-2f08a774ebb5]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1996

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