Seiko Cal. 4436 - 618

The 4436-618 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-670b0420513b]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1969

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