If you intend to be in Germany and take your U.S. there are some things that you are studying.
First you must know that most Americans are for use outside of 110 volts and the majority of Germans are for the operation from 220 volts. That is, if you have a stereo-Americans, shavers, computers, etc. in a German shop, destroying it! The pins are different and it is difficult, this error, but the output adapters are sold and that happens often. The reason why the tickets are sold, as some U.S. dual-voltage and discharge quantities of 110 or 220th
To find out whether your device is a bi-, you have to give the power of information on the device or the device itself or on the energy on the power cord. If you still can not find the information in the manual. If the device is not dual voltage, the only option that you use in Germany for the purchase of an energy converter.
The energy converter can be purchased on the Internet (of course), or select the equipment and hardware. If you have a little access to one of the U.S. Army in Germany, you can buy at the Post Exchange.
In selecting the transformation of your energy to be sure that the conversion from 220 volts to 110 volts and not vice versa. Then you must use the size of the conversion of energy that you need for your (s), it should be specified. Check the performance of the device and ensure that there is less than or equal to, it is recommended to lower the voltage of the converter.
Use of certain watches / alarm clock can be more or less rapidly than before, even if the clock with two voltages. The only way to avoid this is to be sure that the clock is of good quality and relatively new. If the clock is equipped with a converter of energy, which should not be the problem.