Professional Open-Back Reference Headphones ATH-R50x Brand: Audio-Technica Construction: Open-back Wearing style: Binaural, integrated left and right Headphone type: Headband Color: Black Headphone features: Detachable cable Low-frequency response (Hz): 5.0 Hz High-frequency response (kHz): 40.0 kHz Wireless/Wired connection: Wired Driver type: Dynamic Plug shape: Standard plug/Mini plug Impedance (Ω): 50.0 Ω Sound pressure sensitivity (dB): 93.0 dB Driver size (mm): 45.0 mm Weight (g): 207.0 g Purchased last May. Used for approximately 10 hours. There are no major scratches, but please understand that this is a used item. All accessories are included, but the warranty card is missing. Of the two included cables, the shorter one is unused. Please check the condition carefully in the photos. It will be shipped in the original box, wrapped in air-cushion packaging. I am a non-smoker and do not have any pets.