Unfortunately you can not wake you up with MP3, because it can not be set as a sound source for the two alarms. I have MP3 player with alarm, so I thought it should actually go without letting the MP3 player running all night. - Shame! - In Nomalbetrieb to MP3 can be set, but just when the alarms not - who probably imagines something?! Or maybe a software problem?
As this equipment but otherwise is good and reasonably priced, I'm doing it as stated in another reviewers: I turn on the sound in the light alarm clock and program from my hi-fi equipment in the same wake-up time. Then I can compile your own CD with intumescent nature sound or music in top quality, which to me is just ... that seems to me to be more ideal than any other light alarm clock with USB, SD or AUX input, which up to this point the market and got all convincing reviews, as regards this point ... and it's cheaper zweiffelsohne too! (If you have a CD or MP3 player with alarm clock already.)
Really great is the Zizz button, with which you can adjust by one or more pressing a Kurzeitalarm from 15 to 90 minutes (in 15 minute increments) without having to adjust the two different alarm times.
Also I like that all alarms continue laufern another 30 minutes (even in the short time alarm) after the alarm light and sound and then turn off automatically. The bright light in the morning in the bedroom to zusammenzusammeln his things, is more than sufficient and you do not have yet are looking for a light switch, particularly if one has flipped again. Even the alarm for the next day is set, even if it eventually turns off the device during the alarm event.
And the alarms can be switched off and on without pressing many buttons.
The snooze button on top of the device is easy to find if you're still sleepy, and extended the alarm to each further 5 minutes (up to max. 30 minutes).
All in all, well thought out, especially in relation to low price. And when I put the appliance on a non-slipping pad, I can also use the buttons without müsssen hold the device. (The new silicone anti-slip mats are good for.) Unfortunately, the MP3 input and the missing batteries / accumulators in order to receive the settings in case of power failure can give ... why only 4 stars.
It should be mentioned also that the LEDs are not replaceable. But with three years warranty and this price is probably to get over. Normally, the service life of LEDs is quite long.