Denon AH-C500W USB-C Charging Case Wireless Charging Compatible In-Ear Headphones with 12mm Free Edge Bio-Cellulose Drivers True Wireless In-Ear Headphones Black AHC500WBKEM Purchased in June 2025 at Yodobashi Camera for 14,850 yen. Used for about 3 hours after purchase. The sound is very easy to listen to, and I think it has a good tone personally. However, the shape doesn't fit my ears, so I hesitated, but decided to sell it while it's still new. Therefore, it is like new. You can adjust the sound quality with the app! Warranty and proof of purchase are also included. Specifications Driver (size): Free Edge Bio-Cellulose (12 mm) Bluetooth Quick Pairing: Google Fast Pair, Windows Swift Pair Bluetooth Version, Codec: Version 5.3, AAC / SBC / LC3 Auracast: 〇 (Planned update) Multipoint: 〇 Playback time* (earphones only / including charging in the case): 7 hours / 24 hours *Based on tests conducted by Denon in January 2025 using mass-produced AH-C500W and software, paired with a smartphone. Stereo AAC encoded files were used for the audio tracks. Volume was set to 50%. Actual battery life may vary depending on device settings, environment, usage, and other factors. Wireless charging compatible (case) / Quick charging: 〇 / 〇 (1 hour of playback with 10 minutes of charging) Charging time of the case (including earphones): 3 hours Voice calls: Number of call microphones 2 App / Equalizer / Touch control: Denon Headphones app / 〇 (5 bands) / 〇 (customizable) Water resistance: IPX4 External dimensions (earphones / case): 34.7 × 19.1 × 21.4 mm / 58 × 48 × 28 mm Weight (earphones / case): 4.5 g / 50 g Accessories: Charging cable (USB-C to USB-C), Quick Start Guide #DENON AH-C500W #DENON #AHC500W #WirelessEarphones #Earphones