The M1381 Series from MtronPTI is a RF Quartz Crystal with Frequency 0.032768 MHz, Frequency Tolerance ±20 ppm, ±100 ppm, Drive Power Level 1 µW, Load Capacitance 12.5 pF, Shunt Capacitance 1.6 pF. Tags: Through Hole. More details for M1381 Series can be seen below.