The 223 Series from Oscilent is a RF Quartz Crystal with Frequency 32.768 kHz, Drive Power Level 1 µW, Load Capacitance 6 to 12.5 pF, Shunt Capacitance 1.35 pF, Equivalent Series Resistance 50 KOhms. Tags: Surface Mount. More details for 223 Series can be seen below.