On auction is one piece of high precision TCXO ( temperature compensated crystal oscillator). While there are numerous so called high precision clocks, how low is the jitter of those clocks ? Our TCXO has gone through 48 hours burnt in before taking measurement and selection process. All the TCXO we sell has a RMS jitter of less than 5.9ps from 20Hz to 20KHz ! The item is unused. We do air shipping worldwide at US$4.00.