This Wireless Portable Hair Straightener USB Charging has a powerful 8000mAh battery, a 21700 battery model, and a 45-60 minute battery life. It takes 4-5 hours for a full charge, has an input voltage of 5V2A and a power of 40W. The product size is 31*4.5*4cm and the aluminum plate size is 9*2.2cm. The package includes a storage bag, a hair straightener, a manual and a charging cable. Enjoy salon-quality styling and get beautiful results in a fraction of the time.