VEVOR Bubble Tube Lamp 16 Color 1 m Sensory Aquarium Lamp for Relief Calming

Hello, I am interested in purchasing this bubble tube lamp. Could you please confirm whether it can operate continuously when plugged into a mains socket, without batteries? Does the product come with a USB cable only, or does it also include a suitable mains power adapter? If an adapter is not included, can I use a standard USB mains adapter? Thank you.