Compact and portable measures 4.32.82 inches and is lightweight, so you can take it from the party to the park, from your own backyard to the mountains. Its mini size fits in a bag or even a pocket, allowing you to enjoy music wherever you go and whatever you do. Strong compatibility Bluetooth 5.0 provides efficient and stable wireless transmission with strong anti interference performance. Compatible with Android and iOS devices. The Retro Bluetooth Speaker also supports TF cards and USB disks for additional playback options. Good sound quality Dual drivers deliver 4.5W of stereo sound. A digital signal processor with dynamic range control helps prevent distortion at high volumes and preserves full bass at lower volumes, supporting a more responsive listening experience. Long battery life Plays 4-5 hours of music on a single charge. Built in 400mAh rechargeable lithium battery with standby time over 72 hours. If a power outlet is not available, you can charge the device with a mobile power bank for a longer music journey. Use scenarios - Outdoor gatherings and travel: take the speaker on picnics, hikes, beach days, or camping trips to share music or podcasts with friends. - On the move: enjoy music during long bike rides or commutes without worrying about wires or interruptions. - Home and multimedia: pair with a TV, tablet, or computer to watch shows, stream movies, or listen to audiobooks while working from home or relaxing at home.