Protection: System starts on the day of purchase. Malfunctions coated following the manufacturer's warranty. Power surges protected from working day a person. Authentic experts are available 24/7 that will help with set-up, connectivity issues, troubleshooting and much far more. It's a USB C form charging port and Bluetooth connection. https://www.bluetoothspeaker.top/bt-speaker-wireless-portable-wireless-bt-v5-0-stereo-patent-bt-speaker/