Product information:
Speaker: Medium 14.2MMSpeaker impedance: 320Speaker frequency range: 20HZ-20000HZRated voltage: 3.7 VResponse rate: 94+3 DBTalk time: S 8 hoursCharging time: 1-2HBattery: 35 mAhRechargeable battery: 400 mAhControl method: button
Packing list:
earphone + USB cable