fc-255-32.768000khz FC-25532.768000KHZ12.0+20.0-20.0 FC-25532.768000KHZ12.5+20.0-20.0 FC-25532.7680K FC-255-32.7680K-A3 FC-25532.7680K-A3 FC255-32.768K(12.5 FC-25532.768KHZ FC-25540.003000KHZ FC-25540K12.5/20