Seiko Cal. 3871 - 503

This Hand-Winding model from 1992 features a 38mm Two-Tone case. Powered by the 3871 caliber with 26j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-36c733517259]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1992

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