Includes a built-in 380mAh battery. With a charging time of 1.5 hours, the disco ball provides up to 4 hours of runtime, making it ideal for bedrooms, festivals, or parties where power access is limited. Compact size: 55 x 53 x 53mm, weight: 38g. High brightness in a small design allows the light to be placed on a table, chair, or mounted on a wall or ceiling. Equipped with a sensitive sound sensor that detects nearby sounds or music. The color and speed of the light effects change in sync with the beat of the music, offering multiple color modes including red, blue, green, or a combination of all colors. Easily rechargeable via USB using a power bank, laptop, or vehicle charger, allowing convenient use anytime, anywhere. Suitable for various occasions such as birthdays, family gatherings, dance parties, weddings, Halloween, sleepovers, karaoke nights, or as ambient lighting in a child's room.