Technical Details: 20 hours of battery life Type of Connection: 3.5mm Aux 50mm Drivers, USB-A LED Bi-Directional Detachable Boom Mic On-Board Seconary Mic Sidetone EQ Modes with Mute Indicator Product Type: Over-ear Wired Connection Type: 3.5mm Aux, USB-C to USB-A 32Ω is the impedance. 50mm is the driver's diameter. THD: 2% at 1 KHz Level of Sound Pressure: 95±3dB Response to Frequency: 20 Hz to 20 kHz 276g in weight