Seiko Cal. 5631 - 363

The 5631-363 is a sought-after Solar piece from Seiko's golden era. Powered by the 5631 caliber with 32j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-39c97991c736]

Also known as: Goldfeather, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1969

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