Yes. This is the case for all products based on Bluetooth technology. However, Bose Sleepbuds II are designed to achieve ultra-low radiation exposure. During an entire night, Sleepbuds emit a fraction of what traditional Bluetooth headsets emit during a single phone call.If you are still concerned about radiation risks, you may choose to use Phone-free Mode. While functionality is limited in this mode, Sleepbuds II do not stay connected to a device during the night and thus have no emissions after a few minutes have passed.