Seiko Cal. 3870 - 644

This Automatic model from 1993 features a 40mm PVD Black case. Powered by the 3870 caliber with 21j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-eac66ed0a6ed]

Also known as: Sumo, Panda

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1993

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