Specifications : Auto Hair Straightener Comb LCD Iron Brush Electric Hair Massager Item Features: *for thick hair,select higher temperature(210-230) *for normal textured hair,select moderate temperature(190-210) *for delicate, fine hair,you can select temperature( 170-200)select low temperature will be slightly slower to make *a hair style.Boot-- Press the power button 3 seconds, and press 3 seconds off *World First No Burn No Harm 5 Sec. Straighten Iron Comb Launched. *0 Burns 0 harm. *All the world ladies will be crazy for it Advantage: LCD screen display . 360 degree rotatable wire . it avoids the wire twining Some reminders in using the product: 1.) Ensure that your hair is fully dry before using it. Unlike flat irons with various types of plates (for dry or wet hair) this one is only applicable with dry hair. 2.) Comb your hair first before using this product. It is not designed to untangle unruly locks. If you use it to comb your hair, the heat will sort of "permanently" keep the shape of your tangled hair. 3.) Do not immediately set the temperature on high. Increase it to prevent your hair from being "cooked." 4.) Do not leave the brush turned on for a long time. It doesn't have a safety feature where it automatically shuts down when it reached a certain temperature. The last we want is to have a busted piece of hardware. 5.) Ensure to cool down the brush before storing. Specifications: Voltage: DC110v-220v Power : 29W Wire length: about 230cm Heating time / optimal styling time : 30 seconds Straighten hair time: 5 seconds . comb it and become straight during 5 seconds . Thermostatic : 185 degree Max temperature: 230 degree Min temperature: 80 degree Thermostat adjustment segments :5 degree.