Wireless Bluetooth Earphones Headset Good noise isolation to create the optimal environment for listening to your favorite tunes, built-in microphone with noise cancellation for clear calling and friends chatting Simple to set up and operate.Sound great and cancel out 90% of back ground noise. Easily get as loud as you need this wireless headphones to be. Wireless Bluetooth 4. 1 Technology with A2DP stereo music and AptX pure, clear sound.HD quality comty,flexible and light. Sound with HD speaker and enhanced BASS effect. It features hands-free calling, have voice command for picking up/rejecting calls and control for music Bluetooth: V4. 1, the signal strength is nearly twice times than the general Bluetooth headset in the market, High-fidelity stereo music and clear speech.