Liberty 4 NC All-New True-Wireless Earbuds Reduce Noise By Up to 98.5% - Reduce noise by up to 98.5% with our advanced noise cancelling system - Adaptive ANC 2.0 adapts to ears and environment in real-time - 11mm drivers, Hi-Res Wireless and LDAC technology for crisp sound - Full adjustable EQ with Hear ID 2.0 for a tailored sound profile - 10/50 hours of battery for long-lasting quiet - Fast Pair and Bluetooth 5.3 multi-point connection - IPX4 water-resistance against spills and rain - 6 mics and an AI algorithm enable crystal clear calls