Seiko Cal. 3840 - 145

The Seiko 3840-145 represents an important milestone in Seiko's 1985 lineup. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-beffee3d3b10]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1985

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