The Quartzlock E10-MRX Sub-Miniature Atomic Clock (SMAC) is a low cost Rubidium Atomic Oscillator with 10MHz sine-wave 50 Ohm output and Accuracy of 5E-11. Operating from 12Vdc, in a miniature enclosure, measuring only 51 x 51 x 25mm this rubidium has all the performance needed for the internal referencing of a wide range of wired, wireless and instrumentation applications. Quartzlock's SMAC technology far outperforms chip scale atomic clock devices with the E10-MRX far superior AVAR and phase noise. The power consumption is 6W at 12V dc / 500mA after 5min warm time. Volume is just 65cc.