Seiko Cal. 6624 - 690

The 6624-690 is a sought-after Solar piece from Seiko's golden era. Powered by the 6624 caliber with 30j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-5a57b87b6a11]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1974

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