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*Built-in microphone: Allows clear communication; Enables use as a headset. Music and phone controls ensure ease of use.
*3.5mm audio jack: Provides a simple wired connection of a variety of devices.
*40mm drivers: Along with neodymium magnets produce deep, enhanced bass and full-range sound for dynamic audio.
*Sound-isolating design
*Built-in rechargeable lithium-polymer battery enables up to 7-8 hours of talk time or audio playback.
*20Hz - 20kHz frequency response
*32*2 ohms impedance
*Space-saving foldable headband
*Included micro USB charge cable
*Passive noise reduction, Up to 15dB blocks background sounds for an immersive listening experience.
*119dB sensitivity (@ 1kHz) 

Folding Wireless Headphone Stereo Mobile Headset Hot Selling Lanbroo wireless earphone, wireless bluetooth headset, wireless headphone.

*Bluetooth: v4.1
*Speaker Unit: 40mm
*Impedance:32Ω±15%  
*SNR:110db  
*Distortion: <0.3%
*Frequency:18-20kHz 
*Transfer distance: 10m
*Battery Capacity: 450mAh
*Talk time: about 12hours
*Music playing time: about 10 hours
*Standby time: about 250 hours
*Charging time: about 2 hours
*Case Material: ABS
*Size: 170*170mm
*Weight: 250g
*Supports:  Bluetooth 4.1,real voice control to remind every step operation,TF card,AUX,two side Bass sound,Voice prompt, answer the phone