Seiko Cal. 3817 - 957

The 3817-957 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-37b88ece20ea]

Also known as: Turtle, Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1983

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