The technical specifications for the Sony WH-1000XM5 wireless noise-Cancelling headphones:
Headphone
Driver unit: 1.57" (40mm) dome type
Frequency response: 4Hz-40,000Hz
Impedance: 47 ohms (when connecting via the headphone cable with the unit turned on), 16 ohms (when connecting via the headphone cable with the unit turned off)
Sensitivity: 105dB/mW (when connecting via the headphone cable with the unit turned on), 101dB/mW (when connecting via the headphone cable with the unit turned off)
Noise Canceling
Personal NC Optimizer: Yes, uses built-in microphones to analyze user's wearing style and optimize the noise-canceling effect
Dual noise sensor technology: Yes, with 2 microphones on each earcup