NK-828BT wireless bluetooth headphones are for those who want the best wireless listening experience, while watching movies, TV series and music from an iPad and other devices with Bluetooth technology. With typical Nomick design, they offer maximum comfort at all times of the day and superior audio performance to that of other similar products.

Bluetooth:V4.0 CSR
Wireless and wired headphone
Speaker:32Ω/40mm
Sensitivity:100dB/m wat1kHz
Frequency response:20Hz-20KHz
Rated input power:30mW
MIC:-58dB/75Hz-16KHz
Dimension:170*155*34mm
Weight:300g
Rechargeable 400mAh Li-polymer Battery
Talk time:upto 8 hours 
Stand time:300 hours 
Health elastic ABS flexible silicone head versatile design,can be directly applied to I-phone,IPOD,MP3,notebook,PC and other notebook audio-visual equipment.