1: Powerful motor and long battery life: Our protein shake bottle is equipped with a rechargeable battery and charges via USB cable (included), fully charged in 2-3 hours, used twice a day, lasts for 15-20 sky. The 5500 RPM motor speed allows you to enjoy a smooth protein drink in just 30-60 seconds. 2: High-Quality Material: Our electric protein shaker bottle body is made of AS high-quality material and is BPA-free. It has the transparency of glass and the lightness of plastic, is shatterproof and odor-resistant. Includes measuring scale (ml/oz) and seal to prevent liquid leakage. Great for protein shakes, protein drinks, pre-workout drinks. 3: Easy to clean: It is easy to keep the shaker bottle clean, after use, pour the detergent and water, turn on the switch and let the shaker bottle start stirring and cleaning on its own. You can also remove the motor base and place the bottle and lid in the dishwasher. No issues with odor, buildup or discoloration.