The item 90% noise reduction The Soundcore Q20i multi-ear headphones have multiple efficient switches and cutting-edge noise cancellation technology. Accredited High-Resolution Audio Wireless music with Certified Hi-Res Audio is of higher quality than that of CDs. Pure sound with a booming bass can also be produced by the 4mm drivers. With 40 hours of playback time with noise cancellation turned on and 60 hours without, this device is more advanced for mobility and travel. Additionally, a quick 5-minute charge will extend your comfortable, quiet time by 4 hours, even if you're in a hurry and your battery runs out.