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

Delicate and rich sound: Equipped with Anker's original driver [A.C.A.A 3.0], it achieves a delicate and rich sound quality that allows you to hear even the smallest sounds clearly. It also supports high quality sound codec LDAC. 360° acoustic experience with 3D audio: A unique algorithm processes the sound source in real time to provide an acoustic experience similar to being at a live venue or movie theater. It also has a head tracking function that detects and follows head movements. Ultra Noise Cancelling 2.0: Ultra Noise Cancelling 2.0, Anker's proprietary technology, automatically adjusts the noise canceling intensity. It also has a wind noise reduction function. Health Monitoring: Heart rate monitoring, stress check, posture reminder, workout functions, etc. are available. Additionally, this product complies with IPX4 waterproof standards. Package contents: Earphone body, charging case, ear tips (4 types), USB-C & USB-A cable, quick start guide, safety manual, technical compliance mark certified product (frequency band: 2.40-2.48GHz)