SWEAT IN STYLE: The winner in sports audio features innovative sweat proof covering and flexible ear hooks that stay in place no matter the physical activity.</br>TOP QUALITY AUDIO: Hear richer and more natural sound from your smartphones (including iphone 7) tablets and audio devices with the aptX codec.</br>LAST LONGER SWEAT LONGER: Bluetooth 4.1 offers a faster more energy efficient connection so you can listen to music for up to 7 hours. All TaoTronics Bluetooth Headphones should be charged by DC 5V charger.</br>CRYSTAL CLEAR COMMUNICATION: Featuring CVC Noise Cancellation technology the integrated microphone lets you chat without external noise or other interference.</br></br>Product Description</br></br><b>Bluetooth Technology</b> <br> V4.1 Bluetooth mini lightweight wireless stereo sports headphone features stable signal lower consumption security encryption faster transmission and pair speed while producing impressive dynamic sound as well. <br> <br> <b>Build-in battery: </b> <br> With one hour charging time powerful rechargeable battery provides 14 days standby time or up to 8 hours calling/playing time. Chargeable feature make it possible for longer service life. <br> <br> <b>Fit for You </b> <br> The Wireless Bluetooth headset comes with another 2 pairs ear