Seiko Cal. 6371 - 557

The Seiko 6371-557 represents an important milestone in Seiko's 1985 lineup. Powered by the 6371 caliber with 29j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-f4aa8957fd3c]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1985

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