Beteran Syllable G700 Bluetooth V4.1+EDR Wireless Dynamic Active Noise Reduction Super Bass NFC A2DP Multitfunction Portable Stereo HD Voice Studio DJ HIFI Headset Headphone Earphone with Dual Micphone for iPhone Samsung HTC LG Blackberry iPad iPod Music Player PC Computer Macbook (Gold) This Syllable G700 wireless headphone is endorsed by Allen Iverson. Can be connect to iPod, iPhone, iPad, Samsung Galaxy's, HTC or any other device that has Bluetooth capability/ NFC capability/3.5 mm jack. Bluetooth 4.0 wireless technology to provide high-fidelity stereo wireless music enjoyment. Support one to two earphone, which can connect with 2 devices via Bluetooth at the same time. Can support 10m Bluetooth working range with high speed, no loss of audio transmission, is also ready for low edition. NFC simple pairing. Exclusive design patent, highly adjustable, special headband, fashionable headset. The 40mm large-caliber & HIFI speaker, making the sound more shocking and low frequency became stronger. With Great active noise cancelling circuit board, CSR, CVC echo(cancellation) and Double microphones to avoid any noise, make phone calls clearer and more comfortable. Low-loss Lithium battery with 12 hours working time and 2 hours fast charge capability. Protein and pearl wool earmuffs, with soft and good stability, enabling excellent ventilation performance and less sweating.