Anker Soundcore Liberty 4 (Bluetooth 5.3) [Completely wireless earphonesUltra noise canceling 2.03D audioWireless chargingMulti-point

Delicate, Rich Sound: Equipped with Anker's proprietary driver [A.C.A.A 3.0], it delivers rich, detailed sound quality that allows even the smallest details to be heard clearly. It also supports the high-quality LDAC codec. 3D Audio for a 360° Sound Experience: A unique algorithm processes the sound source in real time, providing an audio experience that makes you feel like you're at a live concert or movie theater. It also features head tracking that detects and follows your head movements. Ultra Noise Cancelling 2.0: Anker's proprietary Ultra Noise Cancelling 2.0 technology automatically adjusts noise cancellation intensity. It also features wind noise reduction. Health Monitoring: Enjoy heart rate monitoring, stress checks, posture reminders, workout functions, and more. This product is also IPX4 waterproof. Package contents: Earphones, charging case, ear tips (4 types), USB-C & USB-A cable, quick start guide, safety manual, technical conformity mark certified product (frequency band: 2.40-2.48GHz)