SoundBot SB520 Premium 3D Bluetooth 4.0 Speaker (Gold) Feel the beat! Crystal clear strong bass & passive sub woofer on both ends with 5W + 5W HD loud speakers & 2 x 50mm premium drivers for both active outdoor and indoor use. Built-in 3.5mm audio line in and 2200mAh rechargeable battery allows SB520 to connect to media devices WITH OR WITHOUT Bluetooth capability. Bluetooth 4.0 audio wireless connectivity with seamless streaming, up to 15 hours of playback time, from 33 feets of distance, reproduces high definition quality sounds seamlessly. Unique and one of a kind stainless steel brush metal finish with potent speaker driver to deliver enhanced music experience. Fashionable and stylish design with solid performance and universal compatibility for Android, iPhone, iPad, tablets, smartphones, iPods, MP3, MP4, radio players, and other Bluetooth enabled digital players or media devices with aux port.