220V 50W Car Accessory Bluetooth HiFi Bass Audio Amplifier USB TF MP3 FM. Maximum power: 50W. 1 Car Bluetooth Amplifier. Can play music from TF card, U disk and Bluetooth. Connect to the speaker and power adapter, you'll see this guide ""Bluetooth is ready to connect"", then turn on your phone's Bluetooth feature and connect to the BT-033.
eBay