Includes a built-in 380mAh battery. With a charging time of 1.5 hours, the disco ball can be used for up to 4 hours. Ideal for bedrooms, festivals, or parties where power supply is limited or unavailable. Size: 55 x 53 x 53mm, weight: 38g. High brightness in a compact design, allowing 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 music beat. Offers multiple color modes including red, blue, green, or a combination of all colors. Easily rechargeable via USB using a power bank, laptop, or vehicle power adapter, providing flexibility for use anytime, anywhere. Suitable for various occasions such as birthdays, family gatherings, dance parties, weddings, Halloween, sleepovers, karaoke nights, or as a decorative light in a child's room.