Seiko Cal. 6645 - 589

The 6645-589 is a sought-after Solar piece from Seiko's golden era. Powered by the 6645 caliber with 21j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-aa03cda65182]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1978

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