Seiko Cal. 5633 - 798

The 5633-798 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5633 caliber with 36j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-394e894e6f13]

Also known as: Sumo, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1998

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