CVC 6.0 Noise Reduction Earphones

CVC 6.0 Noise reduction earphones and CSR4.1 Popular Portable Stereo Wireless Bluetooth HeadphonesProduct DescriptionPair up to 2 Bluetooth devices      Bluetooth versionV4.1Frequency range2.4GHz-2.48GHzOperating distanceUp to 10m (free space)Bluetooth profilesA2DP,Website:http://www.szuniverse-tech.com, AVRCP, HSP, HFPStandby timeUp to 3 monthsTalk/music playtimeApproximately 7-8hoursCharging timeApproximately 2 hoursFrequency response20Hz-20kHzOperational temperature-10 to 50°CFunctions :Accept/Finish/Reject/Transfer Call, call waiting, recall, sound off, Volume +/-, multipoint connecting,
CVC 6.0 Noise Reduction Earphones