High Quality Sport Mp3 Player Wireless Headset Headphones Bluetooth Earphones Auriculares Support Answer Call Bluetooth Neckband Sports Earphones, play music from your smartphone, comfortable headphones Three Steps operate to play music, music Earphones for jogging. One click to answer phone call when music playing. Please note that this earphones has no TF playing function Built-in rechargeable Li-PO battery, long running time Size:120X160X50mm(LxWxH), that is 4.7X6.3X2inches