Manufacturer: Sony, Product type: Over-ear headphones, Model: WHULT900NB, Color: Black, Wearing style: Over-ear, Ambient sound mode: Yes, Cable type: Single-sided (detachable), DSEE: Yes, Impedance (OHM): 314 ohms (1 kHz) in active mode, 32 ohms (1 kHz) in passive mode, Headphone type: Closed dynamic, Magnet: Neodymium, Connection: L-shaped gold-plated stereo mini plug, Sensitivity (DB/MW): 110 dB/mW in active mode, 100 dB/mW in passive mode, Microphone unit: Condenser microphone, Microphone direction: All directions, ULT button: Yes, Driver unit: 40 mm (dome type), Frequency range (Bluetooth communication): 20 Hz - 20,000 Hz, Frequency range (active mode): 5 Hz - 20,000 Hz, Inputs: Stereo mini plug, Passive operation: Yes, Cable length: Approx. 1.2 m.