Seiko Cal. 4423 - 522

The 4423-522 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4423 caliber with 36j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-e8c5039f8141]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1972

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