Wireless Bluetooth U Disk Portable Small Speaker.

Product informationConnection method: Bluetooth connectionInterface type: USBBattery capacity: 300mAHFrequency response range: 100HZ-20KHZOutput power: 3WSignal to noise ratio: ≥75dBPower supply mode: built-in lithium batteryChannel: 1Playing time: 1Expansion storage: 32GBBluetooth protocol: 4.0Number of speakers: 1Effective distance: 10 metersOperation mode: buttonSize InformationSize: 117*79*39mmPacking listWireless bluetooth speaker*1