FC-255 32.7680K-B FC-255 32.7680K-E FC-255 32.7680K-E3 FC-255 32.7680KF-A5 FC-255 32.768K FC-255 32.768KHZ FC-255 32.768KHZ/12.5PF/20PPM FC-255 60.003000 KHZ 10.0 +20.0-20.0 FC-255 69.0000KA-AG0 FC-255 69.0000KA-AG5