Price reduction for this weekend only. SONY Digital Surround Headphone System, MDR-DS7500. Enjoy immersive sound perfect for watching movies and playing games. There are some minor scratches and scuffs from use, but there are no operational issues. The ear pads and head part have been newly replaced with compatible products. When adjusting the volume on the headphones, there may be a "zipping" noise. It only occurs during adjustment, so there is no particular problem with use, but please refrain from purchasing if you are concerned. Regarding the battery, I haven't tested exactly how long it lasts, but I've never had it run out while watching a 3-hour movie on a full charge. However, as this is a used item, please refrain from cancellations or returns after receipt. This item is stored at home, so please purchase only if you understand. Thank you. Please contact me before purchasing as it is also listed on other sites. [Brand] SONY [Model Number] MDR-DS7500 [Color] Black [Accessories] 2 AC adapters, Reference Guide (Instruction Manual) MDR-DS7500 (DP-RF7500 + MDR-RF7500) Brand: SONY Structure: Closed-back Wearing style: Both ears, integrated left and right Earphone/Headphone type: Headband type Color: Black Earphone/Headphone features: Sound quality adjustment, Automatic power-on function, Automatic power-off function, Surround sound, Remote control Low-frequency range (Hz): 5.0 Hz High-frequency range (kHz): 25.0 kHz Wireless/Wired connection: Wireless Drive system: Dynamic type Impedance (Ω): 24.0 Ω Wireless standard: 2.4GHz band wireless