Seiko Cal. 5637 - 818

The 5637-818 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-12d2a696ef4c]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1999

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