New cross-border Bluetooth speaker backpack atmosphere light portable wireless sound subwoofer, with a variety of functions, creating a comfortable sound quality experience. Adopting the latest Bluetooth technology, stable connection, supporting lossless audio transmission. Built-in high-fidelity subwoofer, shocking sound effect, enjoy the music feast anytime and anywhere. Backpack design, easy to carry, outdoor travel, party essential. Unique atmosphere light design, create a romantic atmosphere, improve the quality of life. Fearless of rain and sweat. Brand certification, quality assurance. Solve the needs of users for sound quality, portability, and multi-functionality, let music become a part of life.