Seiko Cal. 7110 - 553

This Spring Drive model from 1977 features a 40mm PVD Black case. Powered by the 7110 caliber with 30j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-cba1b9b4ec43]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1977

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