4 Blades Design: The portable blender for milkshakes and smoothies features a powerful motor base and 4 food-grade stainless steel 3D blades. The cutter head is made of SUS304 stainless steel, constructed with food-grade materials. One Additional Bottom Cover: This mini blender includes an extra bottom cover. After blending, the motor can be removed and replaced with the cover for easy storage and use. Easy to Clean and Operate: The personal blender has a simple up-and-down design. Open the cap to drink and remove the bottom for thorough cleaning. The compact blender is user-friendly with a single-button operation. Food-Grade Material: The small USB blender is made from food-grade, non-toxic, and environmentally friendly PP and ABS materials. It utilizes advanced CS+C (Cold Spin + Centrifugal) technology. Safety Protection Device: A safety feature is built into the bottom of the blender. If the bottle and motor are not securely tightened, the device will not operate to prevent injury.