portable blender has applied many user-friendly designs, including accident-proof design. Product Details - Before first use, it requires to charge about 5 hours with the usb cable before use. (NOTE: Please do not use the blender while charging.) - Cut the ingredients into about 1.5-2cm pieces, add some liquid in such as milk, water. - To control the capacity of juice under the 70%-80% cup body capacity is appropriate. -After the blade turns, put the product to normal position. During the mixing, shake the machine to make the mixing more even. - Pour out the juice, enjoy your time. *How to clean the blender? * Pour half of the cup water and few drops of liquid soap, Turn the lid on tightly and then run the motor for 500 sec. All the dirt will come off quickly. Notice: 1：Don't put your hands inside your blender or try to touch the blades. 2 ： Don't use your blender when charging or run your blender without anything inside. 3 ： Don't let the charging base get wet,If it gets wet, please dry it with a dry towel. 4： Please keep the base away from water when cleaning, especially the USB charging port. Easy to clean：The portable blender is equipped with a self-cleaning mode. Just fill in some water and press the button to start washing with no dead corner.