OPENED & USED ONCE. A constant heating design with 2 optional temperature modes and a tourmaline ceramic heater can work together to distribute heat evenly and produce the negative ions which can effectively avoid unnecessary heat damage and reduce hair frizz and static, resulting in shinier, healthier, and stronger hair instead. 4-in-1 design, come with 4 interchangeable heads to fully meet your daily hairdressing demands, effortlessly making your hair dry and fluffy, creating sleek straight hair or beautiful curls and waves. One button control, just slide to adjust the temperature with the stress-free operation, the safety lock will enable quick release for head replacing breeze, secure the head without dropping off easily. 360-degree rotation power cord and tangle-free comb teeth can effortlessly avoid the hair knotting and wire knotting to protect your hair from over pulling or broken with flexible operation experience. Ergonomic streamline handle delivers non-slip and comfortable grips even after a long time holding, compact size and portable for both home & travel use. Features: 1" Ceramic rotating barrel 410 degrees F maximum temperature Directional buttons Tangle protection Pre-set Temperatures: Low 370 degrees F for fine hair Medium 390 degrees F for medium hair High 410 degrees F for coarse hair Adjustable Heat-Up Times: 15 seconds for fine hair 17 seconds for medium hair 19 seconds for coarse hair