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 Function
Impedance: 16S/N: 85dBFrequency: 20Hz-20kHzNoise Reduction Depth:28dbbluetooth: V 4.0NFCSound:40mm large-aperture driversPlaytime:30 HoursPower supply: Lithium battery or Micro USB cableItem Weight13.6 ounces
Package Included:1 * Headphone1 * Charging Cable1 * Manual