Power supply mode: built-in lithium batteryColor: blue, black, red, camouflageFrequency response range: 40Hz-20KHzType: bluetooth speaker Bluetooth protocol: 5.0Built-in battery capacity: 500mAh-800mAhOutput power: 3WConnection method: Bluetooth connectionInterface type: USBOperation mode: buttonSignal-to-noise ratio: 75dB.syi