Truly wireless design with Bluetooth wireless technology for total freedom Get deep in the zone with digital noise cancellation Battery life up to 9 hours/18 total hours with carrying case, or up to 13 hours/26 total hours with noise canceling disabled IP55 sweat and splash-proof design for worry-free use and cleaning Extra Bass sound with deep, punchy low end Built-in microphone for clear-sounding hands-free calls and use with your voice assistant Alexa enabled for voice access to music, information, and more. Activate with a simple touch