The UM-1 from ECS Inc. International is a RF Quartz Crystal with Frequency 10 to 30 MHz, Frequency Stability ±10 ppm, Frequency Tolerance ±10 ppm, ±15 ppm, Drive Power Level 500 µW, Load Capacitance 10 pF. Tags: Thru Hole. More details for UM-1 can be seen below.