Seiko Cal. 3899 - 555

This Spring Drive model from 1977 features a 36mm Two-Tone case. Powered by the 3899 caliber with 17j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-2aab257073cd]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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