<ul><li>ENRG Wireless Bluetooth 5.0 Hi-Fi HD Stereo Sound Headphone On-Ear Foldable Headsets With Built-in Mic For Calling Direct 3.5mm Aux Plug-in And SD Card Support - Black</li><li>Bluetooth MP3 function support stereo music playing, phone calling.</li><li>Support all audio devices that have Bluetooth capability, such as, cell phone ,tablet PC,laptop,computer etc.</li><li>SD card insert,without any bluetooth device,can still enjoy music any time any where.</li><li>Built-in FM Radio.</li><li>3.5mm audio jack, provides a simple wired connection of a variety of devices without Bluetooth.</li><li>Allow you to answer or reject phone calls anytime and anywhere.</li><li>Charged via USB, rechargeable battery, convenient and practical.</li><li>Playing time up to 10 hours, and continue talk time up to 12 hours, standby time up to 320 hours.</li><li>Good quality, foldable design and adjustable length hinges, very comfortable to wear and easy to carry.</li></ul>