The Anker Soundcore Liberty 4 Pro ANC Earbuds deliver premium Hi-Fi sound, intelligent noise cancellation, and exceptional wireless performance. Featuring 7-sensor Adaptive ANC 3.0, ACAA dual-driver technology, Bluetooth 5.3, and a smart charging case with a built-in display, they provide an immersive listening experience. Enjoy up to 40 hours of total playtime, crystal-clear AI calls, and ultra-fast charging. Key Features: • Adaptive ANC 3.0: Advanced 7-sensor noise cancellation that adjusts every 0.3 seconds. • Hi-Fi Dual Drivers: 10.5mm driver and 4.6mm tweeter for rich bass and detailed sound. • Smart Charging Case: Built-in display and touch bar for convenient ANC controls. • 40-Hour Playtime: Up to 10 hours per charge and 40 hours with the case (ANC off). • Ultra-Fast Charging: Just 5 minutes of charging provides up to 4 hours of playback. • 6-Mic AI Clear Calls: Advanced noise reduction for clearer conversations. • Bluetooth 5.3: Stable wireless connectivity with multipoint support. • Hi-Res Audio with LDAC: High-quality wireless audio on compatible devices. • IPX5 Water Resistance: Protection against sweat and water splashes. • HearID 4.0: Personalized sound customization through the soundcore app.