NO SHAKING/ ITS ACCESSORIES NEEDED: Forget whisk ball, spring ball, batteries, Jaxx, and charging. Our cup uses torque formula so using only your finger generates rotational energy that creates a powerful vortex in the palm of your hand ADVANCED GEARS AND AGITATOR: Our patented reverse planetary gear system produces 5 rotation of agitator with each rotation of oval handle. Two coiled blades and the window paddle create a vortex that can mix any type of powder with minimum amount of liquid 24-OUNCE CAPACITY WITH CLEAR MARKINGS: easy to read markings embossed in cup so it will never washed away in dishwasher! DISHWASHER SAFE: Our design is easy to clean, BPA and phthalate-free MADE IN USA: Our shaker bottle is made in the USA from premium ingredients and advanced technology. How it works : Simple! Add your choice of beverage or water with powder (maybe protein) and rotate the agitator using a finger with an oval handle A Real Patented Blender Cup (No shaking so no spilling) it mimic’s pharmaceutical blender using agitator ad gears. You can make lump free protein shakes anywhere and anytime just rotating oval handle which is connected to agitator and patented gear system. No need of whisk ball, spring ball, plastic Jaxx or any kind of charging or batteries required. Coiled structure of blade creates powerful vortex and window paddle scoops up powder from bottom and adds to the vortex for unmatched blending.