Technical specifications Headphone 40 mm audio drivers Frequency response: 20 Hz-20 KHz Impedance: 45 Ohms (passive) Sensitivity: 83.1 dB SPL/mW Max volume: <100 dB with optional limiter at <85 dB Dual embedded beamforming microphone Frequency response: 100 Hz - 8 KHz Wireless Range Up to 10 meters via LIGHTSPEED USB receiver or Bluetooth® Battery (rechargeable) 18 hours play time USB-C charging port Compatible with Dolby Atmos™, Sony Tempest 3D AudioTech and Windows Sonic™ Spatial Sound