Max Home. Electric Automatic Protein Shaker Blender Water Bottle Multifunction Smart Mixer Cup (Clear) Feature Instantly Mixes Nutritional Drinks,Cocktails,and More Durable Stainless Steel and Acrylic BPA Free No clumping No wasted product Capacity:300-400ml Product Usage 1.For athletes:Pre&Post workout nutrition;Mixes instantly;Increased absorption 2. Energy and drink powder & Cocktails & Juices & Baby formula & Eggs and much more Instructions 1.Install 2AAA Batteries(remove rubber bottom to install batteries);DO NOT TWIST OFF 2.Fill mixer with desired liquid 3. Push button and allow tornado to form 4.Add other ingredients to the vortex,portable mixer for instant mixing Warm tips 1. Do not tamper with propeller blade 2.Do not unscrew bottom of mixer cup 3. Do not drink without lid on mug