The fully-upgraded noise cancelling system targets and blocks out a wider range of noises - from plane engines to crying babies. So wherever you go, you can enjoy your personal space. Whether you're indoors, outdoors, commuting, or on a flight, Space Q45's adaptive noise cancelling will automatically select a suitable level to match your location. Also, use the app to choose 1 of 5 noise cancelling levels. 50 hours of playtime in noise cancelling mode will cover an around-the-world flight without needing to recharge. In normal mode, get up to 65 hours of playtime and if you are low on battery, charge for 5 minutes for 4 hours of playtime. The 40mm drivers have a pioneering double-layer diaphragm made from silk and ceramic materials to produce sound with intense bass and crisp treble. Space Q45 noise cancelling headphones also support LDAC for Hi-Res Audio Wireless sound. Space Q45 noise cancelling headphones balance a refined design, ergonomic build, and comfort-enhancing details for a harmonious wearing experience.