Seiko Cal. 5634 - 990

The 5634-990 is a sought-after Solar piece from Seiko's golden era. Powered by the 5634 caliber with 34j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-7db0574ebeca]

Also known as: Bellmatic, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1966

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