Bluetooth 4.2 & Strong Compatibility]: Advanced Chip Bluetooth 4.2 technology is perfectly paired with almost all Bluetooth-enabled mobile devices, such as for iPhone 7, 7plus, SE 6, 6Plus, for Samsung Galaxy S7, Tablet PC, Laptop, etc. Two-way Sound: Headphone and Speaker Mode], You can enjoy music with ear cups inwards twist and you want to share music with others with outwards twist. Two ways of sounding, convenient and helpful.Modes & NFC Function]: Many modes for you to enjoy music like Bluetooth mode, FM Radio, TF card and Audio in. NFC function helps you fast pair with headphone which is convenient and time saving. Fast pairing, music and phone calls easily. Longer Battery Life]: With built-in 350 mAh capacity, it provides about 6 hours of headphone mode, about 3 hours of speaker mode, 8 hours of talking time and 23 hours of standby time.Leather Cushion Head-pad & Adjustable Headband]: Soft PU leather cushion head-pad and ear-pad make sure long time wearing and perfect noise isolation. Adjustable headband is suitable for different head size and foldable design allows you to take out and put away conveniently.