Very short heating time: target temperature can be reached within 6 seconds. The faster the heating time, the faster you can start waving your hair. You have asleep on working days. With curling iron 3 barrels (25 mm) only repeat five times and can immediately go to work/school or meet friends High performance ceramic heating element: for 6S heating time and super fast heat build-up. 2 temperature settings - 150C and 210C. For fine hair, 150 degrees are recommended, for normal/thick hair 210 degrees. The lingering time is approx. 2S-4S Easy to install: first set the safety lock on the handle to "unlock", then align the curling iron with the concave and convex points on the handle to ensure that the curling iron is fully inserted into the handle; finally adjust the safety lock on the handle to "lock", simply press the switch to heat the curling iron.