Seiko Cal. 6390 - 707

The 6390-707 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6390 caliber with 35j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-02cf30f99acf]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1980

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