Seiko Cal. 4423 - 818

The 4423-818 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-98be54f89670]

Also known as: UFO, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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