Temperature gear: 160 -190 -220 Heating time: 100 -0.5 minutes, 220 -3 minutes Display screen: gear light/battery light Optional function: negative ion Battery capacity: 7.4V new LG 18650, capacity 3200MAH Charging time: 2 hours, working time: 1 hour, Charging method: TYPE-C charging port Machine accessories: Type-c data cable * 1, manual * 1, flannel bag * 1, host * 1 Negative ion concentration: 1000W-1500W Cordless and Lightweight with High Capacity Battery: The Cordless Hair Straightener Brush weighs only 229 grams and has a lightweight design that is easy to carry on the go.The 6400mAh battery is conveniently recharged (2.5 hours) using the included USB Type-C cable. With 7-11 styling sessions on a single charge, you can enjoy the freedom of styling at home, while travelling or on the go. Long distance transport may affect the battery level, so please charge it on first use. 8 Minute Automatic Switch-off Setting: Portable hair straightener avoids the risk of accidents due to forgetting to switch off, and prevents the battery from running out, effectively protecting the battery life. With the 8-minute auto shut-off setting, you can rest assured that the brush will turn off automatically after 8 minutes of use. Auto shut-off does not mean there is no power. Press for 2 seconds to restart. Wider Straightening Range and Heat Sensor: The travel size cordless hair straightener brush features triple density teeth and 147 bristles for wider coverage and faster styling for any thin or thick hair type. It also features a 1000 cycles/second smart sensor that thermally monitors and prevents overheating, saving you time and protecting your hair. Perfect for stylists and beginners alike. Total Hair Care: The ionic cordless hair straightener brush combines advanced ionic technology with a keratin ceramic coating that emits 100 million negative ions. Reduces hair damage by up to 90% and increases shine and smoothness by 95%. Ensures a hassle-free, luxurious styling experience for users of all ages. 3 Precise MCH Heat Settings: With advanced MCH heating technology, experience 60 seconds of rapid heat up, more efficient and stable than traditional PTC wands. cordless hair straightener brush has 3 adjustable heat settings to choose from (160C/320F-60 seconds to heat up, 190C/374F-90 seconds, 230C/450F-90 seconds, 230C/450F-90 seconds, 230C/450F-90 seconds, 230C/450F-90 seconds, 230C/450F-90 seconds). seconds, 230C/450F-170 seconds). The indicator light flashes during pre-heating and stays on when heating is complete. Suitable for all hair types, from 2A waves to 4C curls, it is the perfect tool for professionals to create the perfect hairstyle.