Seiko Cal. 3840 - 309

The 3840-309 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-aba65def1fea]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1979

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