TESCOM Negative Ion Straight Iron TS550B-W (Shell White)Moisture Keep Mode: Automatically controls heat every time you clamp your hair. By reducing heat damage, you can protect moisture and prevent hair color fading while styling. Gentle temperature management with upper and lower sensors: Sensors on the upper and lower plates detect the temperature of your hair and manage the appropriate temperature. Prevents damage caused by excessive heat and a loss of styling power. Freely control ends and flyaway