Seiko Cal. 5637 - 508

The 5637-508 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-4420fe14da5a]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1994

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