The FMXMC12S Series from Frequency Management International is a RF Quartz Crystal with Frequency 32.768 KHz, Frequency Tolerance ±20 to 50 ppm, Drive Power Level 0.1 to 0.5 µW, Load Capacitance 9 to 12.5 pF, Equivalent Series Resistance 90 KOhms. Tags: Surface Mount. More details for FMXMC12S Series can be seen below.