Seiko Cal. 3879 - 321

The 3879-321 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3879 caliber with 30j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-20ad0490beb3]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1970

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