Enjoy your favorite music in peace with the Sennheiser Momentum True Wireless 4 Copper. Thanks to the active noise canceling, ambient noise is reduced. This way, you don't have to turn up the volume too loud and you can hear the music clearly. Turn on the Transparency Mode when you're in traffic, for example. This setting reduces ambient noise less, so you also hear what's happening around you. So you can still listen to music, but remain mindful of your surroundings. The earbuds are dust and water-resistant, so you can wear them outdoors without problems. You can listen to music for up to 7.5 hours, so you can listen to your favorite music for an entire day. There's 30 hours of extra battery in the charging case. This way, you can listen to a total of 37.5 hours of music.