1. Bluetooth 4.2+EDR: rapid transmission, transmission range up to 10 meters (Max) 2. Support 1 connect 2 function 3. ldeal for listening to music and receiving calls while doing exercise 4. Compatible with any bluetooth device 5. Built-in lithium battery, low power dissipation, long working 6. Exquisite craftsmanship and fashion appearance 7. Passing 3000 times human ear test
