Seiko Cal. 3899 - 643

The 3899-643 is a sought-after Solar piece from Seiko's golden era. Powered by the 3899 caliber with 27j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-0911aa1e40f6]

Also known as: Tuna, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1999

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