The light effects are pleasant, can light up by imitating the sunrise, the night light function is very practical for a child who does not sleep in complete darkness, there are also different colors to select to accompany the sleep. In terms of sound, there are 8 melodies that are super cute and very soft, more than enough to gently wake you up from sleep, it's much more fun to get up than the usual beepbeepbeeps! Its brightness is clearly visible during the day and turns off according to the time you want at night, ideal for the child to fall asleep with a soft light at night which then turns off automatically, too great for small children prone to nightmares/terrors. With a temperature probe, the setting is quite easy to do, the display is perfect even in the middle of the day, the alarm clock has a function of safety lock to prevent children from accidentally changing set functions, < p>WARNING: this clock only works on the mains, the battery is only used to save the time but does not allow the clock to work.