"Meant to stimulate the Vagus nerve (a regulatory bodily component that starts within the ear and runs through nearly every organ) while its user listens to music, this tech-forward set—which includes the Xen device, headphones, interchangeable earbuds, a display stand, and the necessary charging accessories—replaces typical listening devices. It connects via Bluetooth to your mobile device and streaming service and offers a proprietary in-ear treatment that improves sleep, enhances focus, and overall wellbeing. The stimulation is painless—equivalent to how it feels to use your usual earbuds. Best results (our testing coaxed on calmer sleep after listening just before bed) are achieved with consistent use."