I've only used it a few times, connected to a TV. After that, it was stored at home. The product condition is good, as shown in the photos. Grayish White Headphones Type: Closed, Dynamic Driver Unit: 30mm Dome type (CCAW voice coil adopted) Sensitivity: 102dB/mW Magnet: Neodymium Frequency Response: 5Hz-22,000Hz Impedance: 24 Ω (1KHz) Maximum Input *2: 1,000mW (IEC) Cord Length: Approximately 1.2m Litz wire Cord Type: Y-type (Flat) Input Plug: Gold-plated L-shaped 4-pole mini plug Weight *3: Approximately 180g Microphone Type: Electret Condenser Directivity: Omnidirectional Volume Adjustment: - Effective Frequency Band: 20Hz-20,000Hz Open Circuit Voltage Level (0dB=1V/Pa): -40 dB (0 dB = 1 V/Pa) Output Impedance: - Instruction manual included Box included