The Medisana SAC is a really good Anschaffung.Das device begins exactly half an hour before the alarm comes, slowly driven to the luminosity of the LED lamp to erhöhen.Ein really relaxed Aufwachen.Man is not broken by a shrill tone from sleep, but Gently geweckt.Die handling of the alarm clock is getting used to at the beginning, going to some practice then but slightly from the first Hand.Als all positive: There are alarm 1 and 2. The light function increases gradually when you turn on the light and takes gradually from when you can ausschaltet.Zudem the light to the lamp brightness einspeichern.Sehr well I find that the display dimmer function, so you have the opportunity anzupassen.Auch the display brightness in 4 levels of brightness to his needs the "Display Off" is safe a good thing for people who disturb such a display when einschlefen würde.Die 8 selectable naturals sound absolutely okDer radio reception is absolutely sufficient and also the sound of an alarm clock in Radieos goes for Ordnung.Die time adjusts automatically via RDS ON.The Demo function has two functions gleichzeitig.Man can watch all light settings and audition the naturals to see so what settings optimally wären.Oder when the alarm is turned on, check which alarm settings you made (noise, light settings) .But find the best I used the "Zizz" Funktion.Diese timer function for a Mittagsschlaf.Man can here set between 15,30,45,60,75, or 90 minutes and is awakened after the desired time, without the stored alarms (Alarm 1 and 2) to verändern.Negativ I find that no additional battery was installed in the event of a power outage. The Relax function with different colors I need nicht.Wegen the good price / performance ratio I give 5 stars.