Seiko Cal. 3899 - 647

The Seiko 3899-647 represents an important milestone in Seiko's 1987 lineup. Powered by the 3899 caliber with 24j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-351941f28fcc]

Also known as: Silverwave, Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1987

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