Features:

It is not only a headphone, but also a speaker, when you turn the Horn to outside, it conversion for bluetooth speakersBluetooth 4.0 wireless technology to provide high-fidelity stereo wireless music enjoyment.Foldable design patent, special headband, fashionable headset.40 mm large-caliber & HIFI speaker, the sound is more shocking, low frequency is stronger.Great active noise cancelling circuit board, CSR, CVC echo(cancellation) to avoid any noise.Protein and pearl wool earmuffs, soft and good stability, which also enables excellent ventilation performance and less sweating. Highly adjustable, comfortable to wear.Low-loss Lithium battery with 8 hours working time and 2 hours fast charge capability.Keys in the headset can make and receive phone calls and control music playing function.10m Bluetooth working range with high speed, no loss of audio transmission, is also ready for low edition.This Syllable H-666 wireless headphone connect to iPod, iPhone, iPad, Samsung Galaxy's, HTC or any other device that has Bluetooth capability/ NFC capability/3.5 mm jack.Very good choice for listening to music, watching movie, chatting online etc. It is also convenient for make phone calls.

Specifications:

Music play time:12hrsRadio play time:9hrsSpeaker diameter:40mmSpeaker impedance:30ohmSpeaker sensibility:112db+/-3dbFrequency response:20-20000HzPolymer battery:250mAh

Mp3 player:Decoding range:8-320kbpsS/N:87dBDynamic range:92dBchannel seperation:69dB

Radio:Frequency range:87-108MHz