The SX1555-R Series from MtronPTI is a RF Quartz Crystal with Frequency 0.032768 MHz, Frequency Tolerance ±20 ppm, Drive Power Level 1 µW, Load Capacitance 12.5 pF, Shunt Capacitance 1.35 to 1.5 pF. Tags: Surface Mount. More details for SX1555-R Series can be seen below.