This is the ultimate curling iron. Enhance your style with this one of a kind diamond rod with 4 interchangeable barrels. It is like having 4 curling irons in 1! Changing the barrels is very simple: First always make sure to only change the barrels when the curling iron is cool and turned off. Press both round buttons located in the center of the handle and use your other hand to pull out the barrel and replace with your desired size of barrel. Please note you may need to use some force taking the barrel out as the barrels are safely secured to ensure your safety while styling your hair. The smaller size 3/4″ (19mm) barrel is used to get spiral curls (Taylor swift like) that last longer. The medium size 1″ (25mm) barrel is used to get Drew Barrymore like body waves and sexy beach curls. The large size 1.25″ (32mm) barrel is used for loose waves (bigger, Kim Kardashian like curls). The reverso 1.25″ to 1″ (32mm-25mm) barrel is used to get looser voluminous waves towards the root and tighter curls toward the ends. Features: 4 different interchangeable barrels at: 19MM (3/4″), 25MM (1″) and 32MM (1 1/4″), and 32MM -25mm (1″-1 1/4″) Great for giving your hair more body and volume. Ceramic and diamond infused barrel. An advanced ceramic heater for better recovery time. Excellent for longer lasting curls and waves. Utilizing real diamonds and Far Infrared technology for constant even heat distribution and no damaging hot spots. Ionic technology helps seal the cuticle, locking the moisture inside your hair shaft, protecting your hair from humidity. Advanced LCD display for more accurate temperature control. Heats up to 450F / 235C. Suitable for all hair types. Comes with a free thermal glove for easier use. Universal Voltage – Guaranteed to work anywhere you are in the world. Lifetime warranty.