Product information:Output interface: 3.5mm stereo plugCharging port: Support MicroDC5V/100mA Input voltage range: DC5VBattery capacity: 145 mAhUsb cable length: 50 cmBluetooth version: 5.0Bluetooth distance: ≤10 metersBluetooth frequency: 2.4GHzMIC sensitivity: -42 dbFrequency response: 50 Hz-20 kHzSignal-to-noise ratio: 75 decibelsMusic playing time: ≤10 hoursApplicable equipment: car with 3.5mm AUX jack, speakers, headphonesPacking list:Mp3 players*1