Seiko Cal. 3839 - 900

Released in 1971, the Cal. 3839 with design code 900 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-842dfd2bf8ab]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1971

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