Specification: Size: 13 * 13 * 14.5cm Light source: LED light source Lamp power: 1w Input voltage: DC5V Material: ABS Power supply mode: USB power adapter / 3 AA batteries Color: purple Package includes: 1 piece projection lamp Sweet sleep for children: This lamp creates a warm and dreamy sleeping environment for kids, aiding them in falling asleep faster. Nice decoration: The slumber lamp can rotate 360 degrees and features adjustable colors, projecting a creative star-sky-moon cosmos on walls and ceilings. Perfect for decorating weddings, birthdays, and parties. Multiple options: Can be powered by a charger or battery. Remove the batteries when charging with the data cable. Easy to use: 3 push buttons. A mode --- turns a warm light on / off. B mode: color light (hold for 3 seconds to turn off). C mode: rotary switch.