Awei A825BL Wireless Bluetooth 4.0 Business Earphone Noise Isolation with Build-in Microphone

Main Features:
● Adopted with Bluetooth 4.0 and CVC 6.0 noise cancellation technology, enjoying high quality of talk and music.
● Up to 180 hours stand-by time, 3.5 hours continuously talk time.
● It could realize work-family balance which pairing two mobile phones at the same time.
● The aluminum alloy design and the use of silica gel earmuffs, you can feel that the new machine fine craftsmanship and comfortable to wear.
Bluetooth Protocol: HFP / HSP / A2DP / AVRCP / CVC
Output Power: 10mW
Workable Distance: 10m ( Barrier-free space )
Working Time: 3.5hours for talking time, 3hours for playing music
Stand-by: 200hours
Charging Time: 1.5hours
Charging Voltage: 5V
Drive: 10mm
Sensitivity: 90dB + / - 3dB
Impedance: 32ohms + / - 15percentage
Frequency Response: 20 - 20000Hz