Anker Soundcore Liberty 4 (Bluetooth 5.3) [Truly Wireless Earbuds / Ultra Noise Cancelling 2.0 / 3D Audio / Wireless Charging / Multipoint Connection / Ambient Sound Mode / Up to 28 Hours Playtime / Hi-Res / IPX4 Water Resistance / Health Monitoring / PSE Technical Standards Compliant] Midnight Black Operation confirmed. I mainly use open-ear cuff type headphones, so I'm selling these as I don't have much opportunity to use them. Non-smoking. No pets. Amazon new price: 14,990 yen (October 17, 2025) These earbuds feature noise cancellation and can connect to two devices simultaneously, allowing for convenient switching. They are excellent earbuds in both design and functionality. Please understand that these are used items and are sold as-is, with no returns or claims accepted.