Seiko Cal. 6624 - 690

Seiko 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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