Seiko Cal. 3851 - 218

The Seiko 3851-218 represents an important milestone in Seiko's 1973 lineup. Powered by the 3851 caliber with 31j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-d4ea256b1fe3]

Also known as: Shogun, Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1973

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