【4 Temperature Settings & Smart Digital Display】This hair straightener features a smart, optimized temperature control system with four precise temperature settings (60℃/70℃/80℃/93℃), suitable for all hair types. A built-in LED display shows the exact temperature in real-time, ensuring accuracy and safety during styling. 【199 Million High-Density Negative Ions for Hair Care】This cordless hair straightener utilizes advanced negative ion technology, releasing 199 million negative ions. These negative ions effectively neutralize static electricity, smooth the hair's cuticle, and give hair a natural shine. It also effectively smooths frizz and flyaways, making hair silky smooth. 【Ceramic Heating Element & Overheat Protection】This hair straightener uses an MCH ceramic heating element, which heats up quickly and maintains a constant temperature to minimize heat damage and ensure even heating. The built-in overheat protection function ensures safe and comfortable use, making styling faster and reducing heat damage. 【Cordless, Lightweight & Ultra-Portable】This hair straightener is designed for the modern lifestyle, allowing you to easily create your ideal hairstyle anytime, anywhere. It weighs only as much as a power bank and easily fits into a handbag or travel bag. Thanks to its USB charging function and continuous power supply, this cordless hair straightener is ideal for quick styling, business trips, or daily use. 【Multifunctional Styling】Create voluminous bangs, add volume at the crown, create cute C-curls or bouncy ends. This hair straightener is suitable for all hair types and volumes – whether your hair is long or short, it is ideal and an indispensable multifunctional styling tool for anyone who wants smooth, shiny hair and to say goodbye to frizz.