Seiko Cal. 5639 - 357

The 5639-357 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-de6ca5e8aefe]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1996

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