No price negotiations. New, unopened. This is the SONY stereo headphones MDR-EX155. Enjoy rich, high-quality sound in a compact size, with a tangle-resistant serration cable. It also features a sound leakage reduction function, providing a comfortable listening experience. Although it is a new, unopened item, it has been stored at home, so please purchase only if you understand this. There is a dent on the surface of the package. It is also being sold on other flea market apps, so it will be deleted when it is gone. [Brand] SONY [Model Number] MDR-EX155 [Color] Blue [Other] 9mm driver unit, sound leakage reduction Thank you. Sealed inner-ear receiver MDR-EX155 (LI) Blue Brand: SONY Wearing style: Both ears, integrated left and right Earphone/Headphone type: Canal type Structure: Sealed type Color: Blue Wireless/Wired connection: Wired connection Low-frequency range (Hz): 5.0 Hz High-frequency range (kHz): 24.0 kHz Impedance (Ω): 16.0 Ω Sound pressure sensitivity (db): 103.0 db Drive method: Dynamic type Plug shape: Mini plug Driver size (mm): 9.0 mm Cord length (m): 1.2 m Weight (g): 3.0 g