It also beeps to Permit you know when it’s at your wanted temperature, which took less than a moment every time. The curls lasted a long time, but we can't say a similar for that battery. A backup battery is bought independently should you’d like to extend your styling time. https://allhealthmarket.com/product/health-and-beauty-2/hair-care/hair-care-styling/hair-styling-devices/straightening-curling-irons/2-in-1-hair-hair-curler-straightener-brush-professional-hot-comb-straightener-for-wigs-heating-straightener-comb-styling-tools/