1.Cordless Hair Straightener Brush.The portable hair straightener brush has a built-in rechargeable battery (5000 mAh) for long battery life and provides convenient USB Type-C charging. Small size, light weight, easy to carry around the world. Use it anytime and anywhere, get rid of the trouble of wires. 2.USB Fast Charging.Our cordless hair brush is equipped with a 5000mAh rechargeable battery, which can be quickly charged in 2 hours and can be used continuously for 30-60 minutes after being fully charged. Cannot be used while charging. This provides you with more convenient and efficient life services. 3.4 Temperature Settings.Hair straightener brush comes with four heat settings: 200℃/392℉ for Strong/Thick Hair; 180℃/356℉ for Normal/Textured Hair; 160℃/320℉ for Thin/Fine Hair; 140℃/284℉ for Soft/Fine Hair.The attached LED display allows you to accurately control the temperature and clearly understand the heating process. 4.Unique Sandwich Structure For Healthy Hair.The brush teeth adopt a sandwich structure. Internal teeth provide flexible heat to straighten hair based on hair type without overheating or damage. Cool side bristles cool hair, style it and prevent scalp and hand burns. Contoured handle allows for a safe and comfortable grip. 5.Safe Anti-scald Design.The handle of the hair straightening comb is made of silicone material, which is safe and prevents hand scalding. Our cordless straightening brush will automatically turn off every 30 minutes to prevent wasting power or causing safety hazards when not in use. Optional color: White Heating method: PTC heating Heating temperature: 140 ° C-200 ° C Battery capacity: 5000Mah Net weight of product: 241.3g Product size: 236 * 35.5MM/9.29 * 1.40in