Seiko Cal. 4564 - 690

The 4564-690 is a sought-after Solar piece from Seiko's golden era. Powered by the 4564 caliber with 36j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-cb603f5361d4]

Also known as: Navigator, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1992

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