The Most Praised Long-Lasting Cooling Master – Longest Battery Life, Keeps You Cool All Day on a Single Charge. Instant Chill – Get cool in no time, whenever you need it. Long-lasting Battery – Enjoy up to 28 hours of cooling on a single charge. Charge & Use – Keep it running while charging for uninterrupted comfort. Smart & Simple – The app adjusts automatically for your perfect comfort. Custom Fit – Adjustable design for all-day neck comfort. Versatile Modes – Switch between Fan, Cool, and Warm modes for year-round comfort.