Seiko Cal. 3851 - 428

The 3851-428 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3851 caliber with 29j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-a3fd669bc974]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1991

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