1.Pocket Cordless Design:The Pocket cordless design means you can take it on the go with it anytime, anywhere. Our pocket cordless straight hair brush weighs only 0.29 lb(pounds) and 3.132.791.25 inch are designed for easy use and portability. Whether you're traveling outdoors, working in the office, or suddenly going out, Easy to put into backpack without pressure 2.3-Speed Temperature:Adopting Dual insulation module, it can heat up to the highest temperature within 20 seconds. Three temperatures: 160 ℃/320 ° F, 180 ℃/356 ° F, 200 ℃/392 ° F, separately suitable for fine soft, ordinary, and coarse hard hair. LCD display screen to clearly display the usage of the current temperature battery, and 360 degree anti-scald design for your hair care 3.Negative Ions: Our cordless straight hair brush releases 200 million negative ions when heated. These negative ions can easily enter the gaps in the hair core, repairing your hair from the inside out 4.Rechargeable Commonly Use Type C USB :This cordless hair straightener is rechargeable and comes with a USB Type-C cable for charging. It can be used for more than approximately 60 minutes long-lasting endurance. enough time to straighten your entire hair 2-3 times