Seiko Cal. 3871 - 126

This Hand-Winding model from 1987 features a 36mm Hardlex-Coated Steel case. Powered by the 3871 caliber with 31j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-25aa22d6ee59]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1987

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