Extended Warranty Programs Defend your Bose devices with extended warranty programs and accident defense. Our staff of experts are available 24/seven that will help troubleshoot issues and coordinate repairs. For devices or recorded material where stereo reproduction is essential, two S1 Pro+ Systems can be used to deliver stereo sound. https://www.bluetoothspeaker.top/hot-selling-wireless-speaker-bt5-0-outdoor-subwoofer-hight-powerful-sound/