Powerful Sound System 80W peak power output through dual 3.6-inch full-range drivers and built-in DSP chip delivers rich, dynamic audio with enhanced bass response for an immersive listening experience Advanced Connectivity Features Bluetooth 5.0 technology for stable connections up to 33 feet, plus versatile playback options including AUX 3.5mm and USB inputs for maximum device compatibility Extended Playtime 5000mAh battery provides up to 12 hours of continuous playback at medium volume, with built-in USB port for emergency device charging during outdoor activities Warranty Protection YIER portable bluetooth speakers with subwoofer comes with 12-month worry-free warranty, ensuring peace of mind with your purchase