Seiko Cal. 6657 - 855

Seiko 6657-855

This Hand-Winding model from 1970 features a 45mm Hardlex-Coated Steel case. Powered by the 6657 caliber with 32j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-fa323414060d]

Also known as: Turtle, Crown

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
8.8mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1970

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seikata-wm-fa323414060d