Soundcore Liberty 4 (Soundcore Liberty 4) 🎧 Anker Wireless Bluetooth Earbuds, Powerful Sound and Above-Level Features Features: 🔇 Smart Noise Cancellation Adapts to the Location 🔊 High-Quality Sound and LDAC Support ❤ Heart Rate Sensor 🔋 Battery Lasts for Long Hours with Charging Case 🔌 Wireless Charging 📱 Connect to Two Devices Simultaneously 🎚 Soundcore App to Adjust Sound (EQ) to Your Liking 💧 Sweat and Splash Resistant Just got them yesterday and haven't used them at all. Contact via private message only if you are serious.