Seiko Cal. 3899 - 248

This Automatic model from 1975 features a 35mm PVD Black case. Powered by the 3899 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-bc0d1febbc7d]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1975

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