Seiko Cal. 3870 - 126

This Spring Drive model from 1989 features a 41mm Two-Tone case. Powered by the 3870 caliber with 31j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-3c4066fb3804]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1989

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