Main Features: 1)Line Control Key: Play Key (Can stop or start music) 2)Speaking Key: Both Can Answer the calls and Hang up the call 3)[ Built-in microphone ] 4)[ Third generation balanced damping system ] 5)[ A large number of medical ear canal data, wearing more comfortable ] 6)[ Ergonomically designed to fit the contours of your ear ] 7)[ Improved 3rd gen balanced damping ] 8)[Aluminium alloy sound chamber carfted to precision ] HIGH COPY ORIGINAL HAPPY SHOPPING