There is no vibration. There is no lump. Better taste - Powerful vortex mixer with patented X-Blade technology ultra-smooth protein shake, battery-powered motor - originally powered by 2xAA battery (not included - choose high-quality alkaline), let you mix together! The motor is detachable, charging is convenient, and the shaker flask is easy to clean and durable. The bottle is easy to clean - including the measurement scale (ml/ounce), it is sturdy, odorless, BPA/ DEHP-free, and easy to clean - add warm water and detergent, open it, and let your original electric shaker flask clean itself
