The XBO20S from Xtal Ball is a OCXO with Frequency 8 to 150 MHz, Phase Noise -173 to -112 dBc/Hz, Warm up Time 45 s, Frequency Stability 0.5 ppb, 0.005 ppb, Operating Temperature -40 to 85 Degree C. Tags: Low G-Sensitivity. More details for XBO20S can be seen below.