Seiko Cal. 6658 - 523

The 6658-523 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6658 caliber with 20j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-c935442c1e21]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1979

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