ITEM NAME:Aux Tda7492P 50W+50W Wireless Bluetooth 4.0 Audio Digital Amplifie+Case Kit A4K3 Aux Tda7492P 50W+50W Wireless Bluetooth 4.0 Audio Digital Amplifie+Case Kit A4K3 With AUX Input,With Acrylic Box and Heat Sink can make your module high-grade,Small size,Easy to use,Chip:TDA7492P,Power:2.1 interface 8-25V DC power supply Audio input:CSR8635 Bluetooth chip,Bluetooth V4.0(stereo input various versions of the bluetooth connection) Output Power:Add pre-5532 output foot (