Premium Bluetooth audio: Tecart Runner Bluetooth headphones feature Bluetooth 4.1 + EDR APT-X audio decode technology giving these wireless earbuds unparalleled stereo sound quality.</br>CVC 6.0 Digital noise reduction technology: Intelligently filter ambient noise enable clearer sound during calls and while listening to music; You've truly never heard music sound so good from sport headphones!</br>All day long enjoyment: With Runner running & workouts can go for longer to the beat! The polymer 90 mAh battery in the Bluetooth headphones wireless device provides 8 hours of talk & playing time & 190 hours of standby time. Much more than other sport headphones!</br>Double pairing: Pair with 2 different devices simultaneously! These Runner wireless headphones are ready to use with iPhone 7 Android phones & tablets MAC PC and other Bluetooth devices. So you don't have to drop connection when answering to another device. Resume the music right away!</br>Freedom of distance with sweat-proof: The best advantage of Bluetooth earbuds is wireless connectivity. Now you can even talk and listen to the music 10 meters away from the terminal. The sweat proof coating technology makes the earbud fit in your ear without foreign sensation.<