Seiko Cal. 4571 - 770

The Seiko 4571-770 represents an important milestone in Seiko's 1987 lineup. Powered by the 4571 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-970f14fc5d0e]

Also known as: Sumo, Pogue

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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