Soundcore Liberty 4 with HRM

Premium Sound via ACAA 3.0: Enjoy sound with deep, punchy bass, accurate mids, and clear treble direct from our acoustic system's dual dynamic drivers. Its wide frequency range allows every part of the song to shine for detail-rich listening. 360° Immersive Spatial Audio: As you listen to music and watch movies, the built-in gyroscope and spatial audio algorithm track your head movements to always keep you at the heart of the sound for a completely immersive experience. CloudComfort Ear Tips: 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. Heart Rate Tracking: 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. Personalized Sound: soundcore's unique technology analyzes your ears and the way you hear sound to create a personalized sound profile that's unique to you.