Seiko Cal. 3840 - 905

The 3840-905 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-91c8597467a6]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1966

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