Seiko Cal. 3899 - 107

This Spring Drive model from 1976 features a 46mm Two-Tone case. Powered by the 3899 caliber with 20j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-20ae7ffca645]

Also known as: Turtle, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1976

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