100mWMicrophone unit: 4.5 * 2mm -58dB+/-3dBPlug type: 3.5mm stereoCharging time: Approx. 3-5hoursFeatures:Bluetooth + stereo headset combo + MP3 player + FM radio.Wireless Bluetooth headset,Website:http://www.smartcoolproduct.com, compatible with Bluetooth enabled devices, such as for iPhone, iPad, HTC, Lenovo, Samsung, Tablet PC, etc.Enhanced noise reduction, good choice for listening music, watching movie, answering phone calls, etc.Support TF/Micro SD memory card.With FM function, can listen