The EF0810 SXFI AIR Super X-Fi Bluetooth® Headphones are a high-end headphone that uses a 50mm neodymium driver, has a frequency response of 20Hz~20kHz, an impedance of 32Ω, a sensitivity of 105dB/mW@1kHz, and an internal USB-C charging port. It supports Super X-Fi sound effects and can be adjusted via the SXFI App and SXFI Control App.