SoundCore A30i ANC Wireless Bluetooth Earbuds with Adaptive ANC + 46dB Noise Reduction Depth: 46dB ANC depth to reduce background noise. Adaptive ANC monitors environmental noise in real time to provide the best noise reduction experience. Multi-mode ANC for different environment to provides the best noise reduction effect. Super clear sound and Powerful bass: 6mm custom driver, small size, big power. Exclusive BassUp™ Technology for clear sound and powerful bass. Comfortable to wear and easy to carry : Lightweight and compact design brings a very comfortable wearing experience. Compact lipstick case for ultimate portability. Al-Powered Calls: 4 Microphones + Custom Al algorithm for enhanced calls. IP54 Sweatguard™ Water-Resistance: High level Dustproof& Water-Resistance for use. Up to 7hrs with a single charge: 7 hours of music play time, 24 hours of total play time.