Clear Call Quality - All-metal body, clearer bass under metal cavity to ensure call quality clear. Perfect for sports, jogging & gym exercise, watching TV, or sleep. Silicone Ear Cap - Large, medium and small three kinds of size soft earplugs to choose from, meet the needs of different people. Wide Compatibility - Compatible with iPhone, iPad, Samsung, Android Phones, Smart Phones Tablet and other Bluetooth enabled devices.

2 in 1 Function: You can flip in for normal headphone use, fip out for music speaker use NFC function helps you fast pair with headphone which is convenient and time saving . Multi-mode:Many modes for you to enjoy music like Bluetooth mode, FM Radio(please connect the headphone with your cell phone by the audio cable when in FM mode), TF card and Audio in.Hand-free to make a call or answer a call with built in mic while running, biking, and other forms of exercise.It's noise cancellation feature provides you with amazing sound quality especially when you are outdoors surrounded with noise! Perfect Design :Adjustable headband for different head size, Foldable design and light weight make it more portable to carry, Skin-friendly protein cotton earmuffs for long time wearing which refuse to oppression