Seiko Cal. 5631 - 363

This Solar model from 1996 features a 39mm Titanium case. Powered by the 5631 caliber with 29j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-2b24f579c76c]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1996

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