Type: Bluetooth speakerConnection method: Bluetooth connectionInterface type: USBBattery capacity: 1800Frequency response range: 100HZ-20KHZOutput power: 5Wratio: â¥75dBPower supply mode: built-in lithium batteryChannel: stereoPlay time: 4-5 hoursExpansion storage: 32GBBluetooth protocol: 5.0of speakers: 2Effective distance: 10 metersFunction: voice control, call function, music support, multi-point connection, NFC function, operation mode touchDisplay: NonePlay format: MP3, APE, WMA, WAVShell material: plasticSpeaker adjustment method: touchIs there a radio function: YesBox material: plasticPower supply mode: USB