Automatically stop working when the lid and cup is separated, safe to use. Built-in battery, the blender can provide after being fully . Equipped with stainless steel blade and strong power system, it can crush ice with ease. Just double click the button to , it only takes to bring you fresh juices, smoothie, or milk shakes. Compact and portable, ideal for office, gym, traveling, camping, fishing, on-the-go, etc.