oldable and Stylish: foldable & adjustable headband extremely comfortable over your ears and head. Protein Leather Earmuff: The use of protein genuine leather earmuff make it comfortable for long time wearing. Advanced Bluetooth 4.0: Industry-leading CSR bluetooth 4.0 supports HFP,HSP and A2DP for a fully wireless faster connection and longer effective connection distance experience. NFC technology: Help to pair with the electronic device easily. Excellent Compatibility: Compatible with All Android Phones, IOS, and Blackberry System Phones. End/answer Phone Calls, Pause/play Music, Support with Switch of Previous/next Songs.