Battery: Includes a built-in 380 mAh battery. With a charging time of 1.5 hours, the disco ball can be used for 4 hours. Ideal for bedroom, festivals, or parties where power supply is limited or unavailable. Suitable as a birthday gift for children. Mini and portable: Size: 55 x 53 x 53 mm, weight: 38g. Compact design allows placement on tables, chairs, or mounting on walls and ceilings. Equipped with a sensitive sound sensor that detects nearby sound or music. The light color and speed of color change sync to the beat of the music. Offers red, blue, green, or multicolor modes. USB rechargeable: Can be charged easily using any standard USB power source, such as a power bank, laptop, or vehicle adapter. Versatile use: Perfect for various occasions including birthdays, family gatherings, dance parties, weddings, Halloween, sleepovers, karaoke, or children's rooms.