Denver TSP-502 is a versatile trolley speaker with a built-in battery that offers a wide range of features for your musical enjoyment. With its powerful 50W output and 10-inch speaker, it delivers crystal-clear sound with rich bass and crisp treble. Connect your devices via Bluetooth, USB, SD card, or AUX input to play your favorite music. It also has two microphone inputs with adjustable volume and echo effects, making it perfect for karaoke nights or small events. The user-friendly control panel and remote control allow for easy operation.