Seiko Cal. 3810 - 657

The 3810-657 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-8115638e2e8d]

Also known as: Turtle, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1973

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