Smart Safety Protection Design: This portable blender is built in safety magnetic sensing switch prevent blender from overheating and double click to prevent accidental blending. Stronger Power: Traditional portable blenders only use their blades to blend, but our blenders combined with a more powerful motor and doubled battery capacity makes our portable blender 2 times more powerful than others. Your favorite smoothies and shakes will be ready within 40 seconds. Rechargeable and Portable: The portable USB rechargeable blender equipped with a doubled battery capacity makes 10-15 cups per charge. You can recharge via any USB port for 2-3 hours between uses and drink at home, office, gym, travel or any other outdoor activities. Food-Grade Material: The juicer smoothie blender with its 13.5 oz capacity fits in most standard size cup holders and portable design is made from BPA free food- grade materials. Easy Cleaning and Quiet: Just add water and an optional drop of soap, and run your blender until it is clean. It is so quiet, you can use it during late-night study sessions or early in the morning without waking up your household.