Seiko Cal. 4437 - 223

The 4437-223 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4437 caliber with 29j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-367685a499fe]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1978

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