Closed-back headphones – Bluetooth – Frequency response 20Hz/20KHz – Impedance 32 ohm – Sensitivity 107 dB – With Noise cancelling – With built-in microphone – With volume control – Active Noise Cancelling (ANC) – 50 hours of battery life with ANC off – 40 hours of battery life with ANC on – On-Ear Detection – Charging via Type-C – Compatible with iOS and Android