Outdoor portable audio car bluetooth speaker

Device details:Function: insert card, radio, voice prompt, call functionType: Electric SpeakerConnection method: Bluetooth connectionInterface type: USBBattery capacity: 1500 mAPower mode: built-in lithium batteryPlaying time: 2-4 hoursAdditional disk space: 32 GBBluetooth protocol: 5.0Number of speakers: 2Mode of operation: buttonPlayback format: MP3, WMA, WAVShell material: plasticSupport format: TF U disk cardHow to adjust the loudspeaker: knobIs there a radio function: yesAppearance size: 420 * 60.5 * 61mmPacking list: Bluetooth speaker, charging cablePower Mode: USB

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