ITEM NAME:TDA7492P DC 8-25V Bluetooth 4.0 Wireless Digital Audio Receiver Amplifier Module Product Description Description: Features: 1. This model will automatically enter pairing mode after power on and search for display device name: SANWU Audio. 2. Audio input: various versions of Bluetooth connection stereo input, using CSR8635 Bluetooth chip, Bluetooth V4.0, extremely high software compatibility. 3. Dial code switch can be more convenient to directly adjust the gain of power amplifier after the stage, better promote the damping of the loudspeaker. Specification: Power supply: 2.1 interface DC 8-25V power supply Output impedance: 8 ohms (can drive 4,6,8,16 ohm impedance speaker) Output power: add the first stage 5532 output power is sufficient Product size: 80mm*50mm*15mm/3.14*1.96*0.59'' Package weight: 40g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X TDA7492P Bluetooth 4.0 Audio Receiver Amplifier Board.Included: 1 X TDA7492P Bluetooth 4.0 Audio Receiver Amplifier Board. Due to the different display and different light, the picture may not show the actual color of the item. If item is defective after 3 months, you can still send it back to us.