Seiko Cal. 6656 - 677

Seiko 6656-677

The Seiko 6656-677 represents an important milestone in Seiko's 1971 lineup. Powered by the 6656 caliber with 23j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-48750e1c7e93]

Also known as: Turtle, Navigator

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
45mm
Case Thickness
13.9mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
Burgundy
Jewels
23j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1971

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seikata-wm-48750e1c7e93