High Quality Wireless Bluetooth 4.0 Headset

Function: Support music, multi-point connection
Channel: Stereo
How to use: Head-mounted
Applicable gifts occasions: opening ceremony, awards commemoration, anniversary celebrations, advertising promotions, trade fairs, festivals
Frequency response range: 20Hz-20KHz
Bluetooth version: 4.0+EDR
Output power: 2*10mW
Speaker: 40mm 30 Euro
Audio interface: 3.5mm stereo
Sensitivity: greater than 85DB
Working current: 70mA
Working voltage: 3.7v
Signal to noise ratio: 80dB