Enjoy noise-free travel with liberty 4 nc featuring 98. 5% noise reduction and adaptive anc 2. 0 that adjusts to your ears and surroundings. 11mm custom-made drivers, hi-res wireless, and ldac technology let you indulge in tracks with 3x more detail than regular bluetooth. And with 10h/50h playtime and fast charging, say goodbye to battery anxiety - shrink the noise, enjoy the ride. Features reduce noise by up to 98. 5% adaptive anc 2. 0 makes real-time calculations and adjusts to your ear canals crisp sound with 3x more detail bringing wireless music to life. Use hearid 2. 0 to find the perfect sound profile for you. 10h/50h worry-free battery quick, effortless bluetooth pairing with android devices.