LotFancy Bluetooth Headphones &ndash; Wireless EarBuds Earphones with Mic for Sport Running Workout Athletic Exercise &ndash; Rechargeable Stereo Headset (Black) Bluetooth 4.0 + A2DP technology let you wirelessly connect to compatible devices Built-in microphone allow clear communication; enables use as a headset, digital noise cancellation technology Ultralight, comfortable, easy-to-wear, 33 feet working distance, up to 5 hours of listening and talking time Compatible with most bluetooth smartphones, tablets and MP3 players, such as iPhone 7 7plus 6 6plus 5s 5c 4s 4c/3/2 iPad, iPod, Android Smart phone, Samsung Galaxy S7 Edge 6S Note 7 5 S4 S3 Note 2 3, Galaxy Tablet, Nokia Toshiba Sony and Blackberry, most Mac and Bluetooth-enabled PC laptops Tablet and desktops Longer batter life: hi-density rechargeable battery built in, delivers up to 5 - 6 hours music or talking time