iEazy Bluetooth Headphones, Bluetooth 4.1 Stereo Wireless Sport Earphones Headset Earbuds with Built-in MIC, Black High fidelity stereo audio earphones enjoy entertainment, it can provide perfect clear bass, midrange, treble sound effects CSR-V4.1+EDR Bluetooth version and compatible with a very vast range of devices such as the apple iphones and ipads, Samsung, nokia, Sony ECT Easy to manage phone calls, music and volume, you can easily press the power button to answering a call or press the power button for 2 seconds Long battery life -- you can listen to music up to 6 hours, talk on the phone for up to 4 hours Ergonomic ear-canal buds, perfect for long listening sessions