Ollo Audio X1 headphones. Purchased in February 2025 from Ollo Audio. There are no noticeable scratches or stains, but the ear pads show some wear from six months of use. All contents are included. Non-smoking environment, no pets. The owner registration has been removed, so you can register as a new owner on the OLLO AUDIO website using the included serial number and download calibration software, etc. Also listed elsewhere, so it will be removed when sold. Headphones OLLO Audio X1 Brand: OLLO Audio Wearing style: Over-ear, integrated left and right Headphone type: Headband Color: Brown Headphone features: Detachable cable Low-frequency response (Hz): 5.0 Hz High-frequency response (kHz): 22.0 kHz Wireless/Wired connection: Wired Driver type: Dynamic Plug shape: Standard plug/Mini plug Impedance (Ω): 32.0 Ω Sensitivity (dB): 101.0 dB Cable length (m): 2.0 m Weight (g): 390.0 g