The ear pads have been removed due to deterioration. They can be used without any problems if you attach a replacement. Other functions have been confirmed to be working. The sound quality is normal. The Y500 is a Bluetooth wireless headphone with a high-end design and high-spec features. It features "Ambient Aware" which allows you to adjust the audibility of ambient sounds, "Multipoint" which allows simultaneous connection to two devices, and "Auto Play/Pause". The sensor on the ear cup recognizes the distance from the ear and changes in the shape of the ear pad when worn, automatically starting and stopping music playback. ■ Wireless Headphones ■ Type: Dynamic, Closed-back ■ Bluetooth Version: Bluetooth 4.2, Class 2 (Communication distance 10m, without obstacles) ■ Supported Profiles: A2DP v1.3, AVRCP v1.5, HFP v1.6 ■ Supported Codecs: SBC/AAC ■ Frequency Response: 16-22,000Hz ■ Sensitivity: 92dB/mW ■ Impedance: 32Ω ■ Weight: 230g ■ Charging Time: Approximately 2.5 hours ■ Music Playback/Talk Time: Approximately 33 hours ※When Bluetooth is on※ Charging and playback times may vary depending on the usage environment. ※Supports quick charging (approximately 1 hour of playback with about 5 minutes of charging) ■ Accessories: Headphone cable, USB charging cable, carrying pouch