Wireless Stereo Headphones Bluetooth V4.1 In-Ear Earphones w/ Noise Isolation, Mic, APTX for iOS Android Devices (Black) Excellent Quality Wireless Bluetooth V4.1 Sports Earphones Stereo Headset In-Ear Earbuds with built-in Noise-Cancelling Microphone for Bluetooth-enabled devices. Utilizes the advanced Bluetooth v4.1 and premium APT-X Audio Decode Technology delivering high-fidelity, CD-quality stereo music and clear speech within 10 meters of wireless connectivity. Effectively filters out ambient noises with its leading Noise Cancellation Technology enabling high quality audio output and clear sound from the microphone resulting to a premium hands-free phone conversation and music listening experience wherever you may be. In-ear earbuds design that ensures a perfectly comfortable fit 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.