The cordless hair straightener is an ergonomic device that allows you to straighten your hair.  With double ionic technology, this device works wonders to make your hair shiny and smooth by minimizing tangles and frizz in your hair.  You can choose from 3 heat settings,140,160,180c, to get your desired style of hair. To make sure that the gadget is safe for use, this device offers protective functions, such as ceramic-coated plates and quick heating. The ceramic coating ensures that your hair is straightened evenly. It is worth noting, that with a capacity of 4000 mAh, you can take pleasure in 40 minutes of use and recharge it with a USB type-c port. Specifications ​Battery Capacity: 4000 mAh Voltage: 3.7V Temperature Control: 140-160-180°C Runtime: 40 mins Recharge time: 4 Hours Heating Plate Size: 89 x 24 mm