After a month of use, the clock is deregulated by at least 15 minutes. It's a shame to sell such a thing. Result, I can not even make a claim. I thought the large button on top was also used for the SNOOZE function is used to delay 10 or 5 minutes on the clock but it just serves to switch off the alarm and inform. SNOOZE is the primary function of an alarm clock. Similarly the thermometer is unreliable and displays 1-2 degrees below.