DC 5V 6W+6W 2 CH 2 Channel Stereo Bluetooth Amplifier Board Module Lithium Battery Powered for Speakers Loudspeaker Box Modified

? ? ? ? Features:? ? Output power: 6W + 6W Applicable Speaker Impedance: 4¦¸, 6¦¸, 8¦¸ Power supply voltage: DC 5V or 3.7V lithium battery Charging interface: When using the lithium battery as power supply, the charging interface is DC 5V power supply or cell phone charger can charge a single lithium battery. (The charge management circuit limits the maximum voltage to the battery is 4.2V DC) ? ? Package: ? 1 x 2-Channel 2X 6W Stereo Bluetooth Amplifier Board Lithium Battery powered AMP DC5V ? ? ? ? ? ? ?