The most important criterion is the volume at night, for he shall not wake me up and get me to sleep. Even in absolute silence at night you will hear no ticking. The alarm clock is also reliable and even has four consecutive alarm tones or steps. Thus, it should even be interrupted of the deepest stage of sleep. The activation of the alarm clock on the lying on the corner of toggle switches is really solved terrific! A "4-minute snooze" he has also, as well as a small not too strong glow lamp in the upper right corner (1-2 clock). The red alarm hand is not able to be moved counter-clockwise, so that you, you should have miscalculated times with the alarm time and the alarm too early you go, the pointer again must turn completely to the desired locations. But that is only a very minor complaint because, once set correctly, everything works fine and reliable. For lifetime of 1.5V AA battery I can unfortunately or fortunately still not say anything because I have the alarm for only a few days. Conclusion: Absolutely recommendable handy alarm clock!