Seiko Cal. 3874 - 387

The 3874-387 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3874 caliber with 20j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-8beca72bf1c0]

Also known as: World Timer, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1970

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