Seiko Cal. 6131 - 143

The Seiko 6131-143 represents an important milestone in Seiko's 1965 lineup. Powered by the 6131 caliber with 36j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-b244b5148bad]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1965

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