Just keep it out of the reach of earthquakes, tsunamis, terrists, athiests and pets. If your hair and fingernails fall out, consult your doctor. If swallowed, wash out with Jack Daniels. But rest assured, in the unlikely event of malfunction, it is designed to melt its way through the Earth till it reaches China, where it was made. In the meantime (geddit) enjoy the accuracy. You can now keep appointments to the microsecond.