The FK13A from Abracon LLC is a RF Quartz Crystal with Frequency 32.768 kHz, Frequency Stability ±0.04 ppm, Frequency Tolerance ±5 to 20 ppm, Drive Power Level 0.1 to 1 µW, Load Capacitance 6 to 12.5 pF. Tags: Surface Mount. More details for FK13A can be seen below.