Seiko Cal. 7187 - 536

This Hand-Winding model from 1983 features a 37mm PVD Black case. Powered by the 7187 caliber with 32j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-a8b78df9b447]

Also known as: Sumo, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1983

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