Cowin E7 bluetooth Earphone Wireless Headphone HIFI Sound Active Noise Cancelling Deep Bass ANC Earbuds with Mic

Features Professional Active Noise Cancelling TechnologyProprietary 40mm Large aperture Drivers High quality Built in Microphone and NFC Technology The Professional Protein Earpad and 90° Swiveling Earcups A built in 600mAh battery won t allow your headphones power off you can enjoy your world without noise for 30 hours long time Specification Brand model Cowin E7Standard Version Without ANC FunctionUpgrade Version With ANC FunctionImpedance 16ΩS N ≥85dBFrequency 20Hz 20kHzNoise Reduction Depth 28dbbluetooth V 4 0 NFCSound 40mm large aperture driversPlaytime 30 HoursPower supply Lithium battery or Micro USB cableItem Weight 13 6 ouncesPackage Included 1 Headphone1 Charging Cable1 Manual