The noise-blocking performance joins with Phiaton's APT-X/SBC wireless transmission scheme delivering uncompressed CD-quality sound, so load up your player with your favorite Lossless recordings and you'll be impressed at the high caliber of musical detail and smoothness heard in the PS210 BTNC.The Phiaton PS210 BTNC features a neat silver aluminum color matched by a controller on cord containing all the sundry buttons for feature set operation. The headphone recharges its internal lithium-polymer battery via a 'mini' USB cable (provided) from any computer USB connection. The Phiaton's built-in microphone has proprietary 'Echo-Off' noise rejection that minimizes that disturbing ring of your voice to the party on the other end of your call. As another plus, the headphone works with a standard cable in situations where wireless Bluetooth is not possible (airline flights) or if the battery runs down. Expect about 11-12 hrs of run time from the Phiaton PS210 BTNC per charge.