Specifications:
Output power:3W *2
Input Sensitivity:400mV
Music play time:12hrs
Radio play time:9hrs
Speaker diameter:40mm
Speaker impedance:30ohm
Speaker sensibility:112db+/-3db
Frequency response:20-20000Hz
Polymer battery:250mAh
Mp3 player:
Decoding range:8-320kbps
S/N:87dB
Dynamic range:92dB
channel seperation:69dB
Speaker Size:40MM*2
Frequency range:87-108MHz
Support:TF Card Play Mode & FM Radio
Color:black/blue/white/red

Features:
It is not only a headphone, but also a speaker, when you turn the Horn to outside, it conversion for bluetooth speakers
Bluetooth 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, 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.