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This combo is focused on making Bluetooth charging speaker. You can easily make speaker with these type of combo. | PAM8403:- Super mini volume: 1.85 x 2.11 cm.Can be easily placed in a variety of digital products within a small space, high efficiency amplification | Charger Module Micro :-Charge and Discharge Protection Module, Input Voltage: DC 5V, End-of-Charge Voltage: 4.2V +/- 1%, Max Charge Current: 1000mA | BLUETOOTH MODULE:- Input Volt - 5 V DC, Audio Out : L R G (it must be connected to amplifire) | Allows you to play songs to your speakers directly from your phone, Compact and Small can be powered with usb wall power adapter