Wireless In-Ear Headphones,Bluetooth®, Up to 6 hours battery life, Control audio, calls and volume with touch sensors located on each earbud, Frequency Response 20 – 20,000 Hz, Sensitivity 98 dB/mW, Impedance 16 ohms, Weight 49,7 g, USB charging cable (Type-A/Micro USB Type-B), EMicrophone Type MEMS - WHITE