NAXA Electronics NE-927 Bluetooth Wireless Stereo Headphones, Black Enjoy music wirelessly from smartphones, laptops, tablets, and other Bluetooth enabled devices Built-in microphone allows you to take and make hands-free calls from a connected smartphone Convenient phone, volume, and music playback controls Rechargeable lithium battery provides up to 15 hours of music play time or 20 hours of talk time 3.5mm input for optional wired operation