ONEU Bluetooth Headphones V4.0 Wireless Stereo Noise Cancelling Sport Headset High Fidelity Headphone with MIC Support TF Card Ultra-efficient bluetooth 4.0 chipset and advanced CVC noise cancelling technology can accurately distinguish the difference between voice communication and noise Intelligently filters ambient noise to ensure deep bass and crystal clear vocals Powerful battery provide standing by time up to 20 days support continuous talking up to 20 hours and playing more than one day with a single charge Custom fit supra-aural soft earmuffs and materials are close to human skin ensure long lasting comfort in various rugged circumstances Built-in microphone for headset functionality with controls for media and phone calls bring you more convenience and foldable design make it easy to carry Universal Compatible for Apple iPhone 6 6 Plus 5 5S 4 4S iPad iPod Samsung Galaxy S6 S5 S4 S3 LG Motorola Sony and Android Mobile Phones. Almost all smartphones can work with this well Our warranty covers the product for up to 60 days. We will exchange the item at no extra cost for any defect or complaint