1.USB: Dual-purpose power supply can be switched arbitrarily.Battery Power/USB Power Each lamp base is equipped with a battery box that can be lit individually or can be connected in series with a usb data cable and one power supply can be lit multiple times. 2. Warm effect: these decorative Christmas lights are designed with warm light soft and beautiful bring you a comfortable visual feeling creating a warm effect at family reunions Christmas parties and so on. 3. Christmas atmosphere: our Christmas window lights can bring a strong festive atmosphere to your house you can put the beautiful light on the table or on the desk and it will create more unforgettable moments for you. 4. Multifunction Christmas decoration: Besides bedside light the 3D lamp can also serve as Christmas table ornament. You can place on your table desk fireplaces windowsill and more to add festive glowing to your house and create a warm and gorgeous Christmas atmosphere. 5. If you have any question please feel free to contact us Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Material: LED+plastic Power supply: AAA battery or USB power supply (without battery and USB cable) includes: 1x 3D Christmas Night Lights