Seiko Cal. 3899 - 707

The 3899-707 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-36031111acbe]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1970

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