This hair straightener brush is designed for straight hair, with unique teeth designed to easily comb straight hair. Features: Using Polyimide Plates heating technology, it heats at a constant temperature for greater protection. Built-in 4000mAh rechargeable battery can be used for up to 35 minutes at the highest temperature setting. Choose from 3 temperature settings (160, 180, and 200 degrees Celsius) based on your hair type. The handle insulation with layer can prevent hand heat. Features an inner and outer 3D comb tooth structure for strong hair-grabbing ability and prevention of scalp burns and hair tangling. Comes with a LED display, the temperature can be monitored and adjusted as needed. Heating evenly minimizes damage to hair. At the same time, it releases negative ions to repair hair and reduce frizz. Lightweight and portable, can be used anytime and anywhere. Suitable for all hair types including wet, dry, soft, thin and thick hair. Specification: Material: ABS Product Size(LxWxH): 22.3 x 9.5 x 5 cm Color: Blue Work Power: 35W Work Voltage: 3.7V Charging Time: 3 hours Usage Time: 35 minutes Battery Type: 1 x 4000mAh Lithium Battery (included) Heating temperature: 160-200 Celsius Charging Mode: USB Charging Cable Power Supply (power adaptor not included) Package Content: 1 x Hair Straightening Brush 1 x USB Charging Cable 1 x User Manual Please Note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a