Seiko Cal. 3899 - 105

This Hand-Winding model from 1968 features a 46mm Stainless Steel case. Powered by the 3899 caliber with 30j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-6499c880d348]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1968

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