2025 New Model Large Volume High-quality Miniature Home User Outdoor Portable Wireless Speaker Backpack Bluetooth Speaker, Shock Effect, Enjoy the Music Feast Anytime and Anywhere. Lightweight and Portable Design, Backpack Carrying, Free Your Hands, More Freedom in Outdoor Activities. Adopts the Latest Bluetooth Technology, Stable Connection, Fast Transmission Speed. Built-in Large Capacity Battery, Long-lasting Battery Life, Satisfying the Needs of Long-term Use. Waterproof and Dustproof Design, Undaunted by Adverse Weather. Brand Certification, Quality Guarantee, Customized for Music Lovers, Let Every Trip Be Filled with the Company of Music.