Soundcore Anker Liberty 4 Anc Tws Earbuds With Acaa 3.0

Key features -Crisp, Clear Sound via ACAA 3.0 Coaxial Acoustic System. -360° Immersive Spatial Audio with Music and Movie Modes. -CloudComfort Ear Tips for Long-Lasting Comfort. -All-New Heart Rate Sensor with soundcore App. -HearID Personalized Active Noise Cancelling. -The in-ear heart rate sensor tracks your heart rate as you listen throughout the day. Check your daily data, use while working out, and more via soundcore Wellness in the app. 9/28 Hours of Playtime for All-Day Listening. -The flexible dual-layer structure adapts to the shape of your ear canal for a comfortable fit throughout your listening session. Includes 4 sizes of ear tips to ensure you find the right fit. -Soundcore's unique technology analyzes your ears and the way you hear sound to create a personalized sound profile that's unique to you.