1More SonoFlow Headphones. Experience how fantastic your favorite songs can sound. The SonoFlow headphones are equipped with dynamic 40mm drivers that guarantee crystal-clear sound. Built-in microphones allow for comfortable conversations, and Bluetooth 5.0 ensures a fast connection to your device. Additionally, they utilize the innovative QuietMax noise cancellation technology, which effectively suppresses background noise. A special app offers 12 EQ settings, and the battery life lasts up to 70 hours. The foldable and ergonomic design provides exceptional comfort even during hours of music listening. Experience your favorite songs. The SonoFlow headphones will surprise you with their outstanding sound quality. Thanks to the dynamic 40-millimeter drivers with DLC composite diaphragm, you can enjoy detailed and clear sound as well as deep, powerful bass.