Features:   1. Foldable design provides maximum portability、piano noble craft paint material to anti-scratch.   2. Adopting protein soft high elastic ear pads、 comfortable for long time wearing and isolating outside noise.   3. Great compatibility.Compatible with bluetooth-enabled devices of cellphones、notebook、laptop and smart TV etc.   4. CVC6.0 broadband noise reduction、 with automatic noise reduction technology、 provide natural and clear music   5. Can be used as wired headphone when its in low power、 a wired 1.5m long bold audio cable is avaliable(free charge) and  capatiable with the card play function (TF card).   6. Up to 8 hours of play time with rechargable 320mAh safety explosion-proof polymer battery.Charge take only 2.5 hours and 240 hours standby、low battary alerts and smart power outage when in full charge.   7. Using 40MM NdFeB strong magnet speakers. NdFeB large unit can enhance the bass horn shock effect and widen the sound field、 play HIFI sound level. Advanced microphone system provides clear phone calls. Specifications:          General Specification             Brand         Sound Intone              Model         BT-09             Color         Black、 Gold             Cable Length         1.5m             Wearing Type         Headset           Technical Parameters             Conectivity Interface         3.5mm             Driver Unit         40mm             Receive Sensitivity         103DB             Impedance         32Ω             Frequency Response         20-20000HZ             Bluetooth Version         4.0             Transmission Range         10m    Package  Included:                   1x Sound Intone BT-09 Headset             1x Charging cable             1x Manual