2 WAYS OPERATIONStar Night Light is powered by USB cord with adapter, computer, power bank. Or operated by 4 x AAA batteriesHIGH-CLEAR STARS AND MOON PROJECTIONHollowed-out design with 360-degree silent rotation, baby night lights with 9 different color options make you love bedtime even moreREMOTE CONTROL AND TIMERNight light projector can be remote-controlled from a distance of up to 32 feet. 5 to 999-minute timer switch, blue LED digital display that wont hurt your eyes in the darkMUSICAL NIGHT LIGHT PROJECTORStar projector with high-quality speaker and built-in 128M TF card (removable), comes with 12 different well-selected lullabies. You can also add your own music or white noise into the card. Listening to the comfortable music, enjoying the sky star projection, which makes you feel relax and sleep well all night.