P>specification size: 10 x 3 x 2 inches rated voltage:100-230v 50/60hz/ rated power: 29w with heat insulation inner sleeve and protectiom temperature setting guide for different type hairs 1.for thick dense or curls hair, choose 210-230 degrees celsius; 2.for most of hair, choose 190-210 degrees celsius; 3.for thin and soft hair, choose 170-200 degrees celsius, molding can be slightly slower. How to use 1.please make sure hair dry and neatly groomed before using; 2.use the plug into the appropriate socket; 3.turn on and set the temperature; 4. Use it when the temperature reach desired temperature; 5. One hand pulls hair end and the other hand comb with straighter during use; 6. Please use hair styling lotion,softener lotion and wash clean beforehand when you want straight hair last longer; 7.it should not clip too much hair, please slow down the speed in the process of drawing if you really want to clip more; 8.this product will be auto off when no any operation for an hour.