Cordless & Portable Design: Enjoy hassle-free styling with our cordless straightening brush. Its compact and lightweight design allows you to style your hair on the go, without the need for a tangled cord or outlet. Stay stylish wherever you are! 30s Fast Heating & Straightening: Featuring MCH heating technology, our brush heats up to 392F in just 30 seconds, providing even heat distribution for quick and efficient straightening. Say goodbye to curly hair in minutes and hello to silky smooth locks. USB Rechargeable & Long Working Time: With a 4,000mAh high-capacity battery, our brush offers up to 45 minutes of continuous use at the highest temperature setting. Monitor the temperature rise and remaining battery life with ease, and recharge conveniently via USB. Negative Ion Hair Straightener: Release 50,00,000 negative ions while heating, our brush penetrates the hair core to repair and nourish, leaving your hair with a healthy shine and free from frizz. Suitable for all hair types, from thick to thin, long to short. Safe Anti-scald & Anti-accident: Safety is our priority. The brush features a protective device on the heating plate to prevent skin burns, along with an auto power-off function after 15 minutes of inactivity. Style your hair with peace of mind.