Bluetooth V4.1 Wireless Headphones In-Ear Earphones w/ Noise Cancellation, Mic, APTX for iOS Android Devices (Black) Superior Quality Wireless Bluetooth Sports Earphones Headset Earbuds In-Ear Style with built-in Microphone for Bluetooth-enabled devices. Equipped with advanced bluetooth v4.1andapt-X audio decode technology delivering high-fidelity stereo musicandclear speech within 10 meters bluetooth operating range. Reduces outside noises with its Noise Cancellation technology enabling clear sound from microphone for a high quality hands-free phone conversation wherever may be. Fits perfectly and comfortably to your ears with a hassle-free cable that stays out of your way. This earphone allows you to adjust the volume, play/pause, select songs and answer/hang up calls conveniently. Never miss a call anytime with its built-in clear Microphone. Enjoy your music or phone conversation for up to 6-8 hours with its high-capacity rechargeable built-in battery.