Lightweight and portable design USB mixer that is easy to carry and fits in most car cup holders. Safety note: the unit will not operate unless the base and the cup are properly joined. USB rechargeable and portable power Builtin rechargeable lithiumion battery; a single charge can last up to a week. Easily charged from mobile power banks, car USB ports, laptops, and more. Can also be used as a mobile power source to charge your phone. Onebutton startup and easy cleaning One button starts the mixer in about 3 seconds. Up to 16500 rpm with stainless steel blades; can blend crushed ice, frozen fruits, vegetables, and seeds in roughly 20 seconds. Easy to clean: add water and press the button to flush clean. This compact mixer operates quietly compared with conventional mixers. quality materials and versatile use BPA, nontoxic, environmentally friendly ABS base. Suitable for a wide range of uses including green fruit smoothies, milkshakes, juices, protein shakes, baby food supplements, and salad dressings. Practical use scenarios On the go: blend a quick smoothie or shake in your car or at the office without a bulky appliance. Outdoors and travel: use with a USB power bank or other portable power source; the unit can also charge your phone when needed. Quick kitchen tasks: prepare baby food, dressings, or small portions of smoothies and shakes for busy mornings or healthy snacks.