Seiko Cal. 3840 - 551

The 3840-551 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3840 caliber with 35j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-11d3a462af00]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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