The 2025 new model large volume high sound quality small home user outdoor portable wireless audio backpack Bluetooth speaker, shock sound effect, enjoy the music feast anytime and anywhere. Lightweight and portable design, easy to put into the backpack, a good companion for outdoor travel and family gatherings. Adopting the latest Bluetooth technology, the connection is stable and the transmission speed is fast. Waterproof, no fear of rain and wind. Built-in large capacity battery, long lasting power supply. Quality assurance. Let music become a part of your life, immediately own, start your high-quality music journey.