Seiko Cal. 6646 - 758

The 6646-758 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6646 caliber with 26j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-26cf7cc5d2aa]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1975

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