1. Audio equalization adjustment, allowing for on-demand control of the accompaniment volume and effect 2. Bluetooth connection playback, achieving a convenient and fast connection method with stable transmission 3. Audio output jack, inserting headphones enables hearing sound feedback, allowing for monitoring of sound changes and making adjustments more easily 4. Compact and easy to carry 5. Simple operation, convenient to use 6. Power supply method: USB direct plug-in power supply
