I purchased these around April of this year at Yodobashi Camera in Kyoto. I used them for a few days, but I ended up using products from other companies most of the time, so I'm putting them up for sale! 【Product Description】 Delicate and Rich Sound: Equipped with Anker's proprietary driver "A.C.A.A 3.0" for delicate and rich sound quality, allowing you to hear even the smallest sounds clearly. It also supports high-quality codec LDAC. 3D Audio for a 360° Sound Experience: Proprietary algorithms process sound sources in real-time, providing an audio experience like being in a live venue or movie theater. It also features head-tracking that detects and follows head movements. Ultra Noise Cancelling 2.0: Anker's proprietary Ultra Noise Cancelling 2.0 automatically adjusts the strength of noise cancellation. It also features wind noise reduction. Health Monitoring: You can use heart rate monitoring, stress checks, posture reminders, workout functions, etc. This product is also IPX4 waterproof. - Model Name: Liberty 4 - Brand: soundcore - Color: Gold - Accessories: Charging case, 4 sizes of ear tips, USB cable, Quick Start Guide Other Features: Noise Cancelling