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Cortical features: the first layer of cowhide
Using high-quality fiber
With root number: double root
• Signal to noise ratio: 85db (FM: 65db)
Light output area: 3
High Quality Wireless Bluetooth 4.0 Headset Color:black Cortical features: the first layerFunction: 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