True Wireless Stereo (TWS) System for enhanced sound performance. IPX4 Waterproof rating for outdoor use and weather protection. Bluetooth 5.0 for wireless music streaming from smartphones, tablets, laptops, and computers. Built-in Rechargeable Battery with up to 3.5 hours of playtime. 220W Maximum Output with a 5.25' subwoofer and 1' tweeter for clear and loud sound. Wireless microphone included for karaoke or announcements. Auxiliary input and USB flash drive support (up to 64GB). Microphone priority function and adjustable microphone echo for better sound control. USB 2.0 interface with MP3/WMA/FLAC audio file support. Battery indicator LED lights to monitor battery levels. Remote control for convenient operation.