Suits all types of hair, from long, fine and fragile, to short coarse, curly or thick Can use when there is no outlet for plug-in; fit in luggage, purse, or cosmetic bag for traveling,commute and on-the-go. With the chargeable high-capacity battery you can use it 30-50 minutes in the different temperature and environmental Micro USB make it a universal hair straightener, easy to charge worldwide. USB out port make it power bank in emergency. Up To 392 F, Charging time - 5-6 hours,USB charging cable & Adapter included Display shows both temperature and battery life.