Seiko Cal. 6668 - 657

Seiko 6668-657

The 6668-657 is a sought-after Solar piece from Seiko's golden era. Powered by the 6668 caliber with 28j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-89db4534d219]

Also known as: Baby Tuna

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
41mm
Case Thickness
15.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
White
Jewels
28j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1973

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seikata-wm-89db4534d219