USB Rechargeable Vortex Mixer:No need for extra batterie.The shaker bottle comes with a USB cable to charge it anywhere,such as home,office,gym,car even on the go if there is a power bank 16oz Capacity - Easy To Clean And Widely Application: 16oz capacity will meet your demand, neither too big nor too small. This self-mixing vortex mixer can also be cleaned by adding water and soap. Allow the mixer to create a vortex and rinse it! It's widely used for kitchen cook, office worker, fitness fanatic, stir milk, or other occasion. Leak Proof Shaking Bottle:One-twist locking mechanism tightly seals lid & prevents spillage during mixing BPA-Free Shaker Bottle:Sleek, stainless steel and high-quality Food-grade BPA-free material give you style and peace of mind Powerful Electric Protein Shaker Bottle:quickly mixes up drinks no clumping.Just adding the desired liquid, press the power button on the motor to create the vortex, add the powder and wait 30 seconds.It mix all your powder shakes.Works great with pre-workout, creatine, protein, and any other powdery substance Notice:1.Do not tamper with propeller blade.2. Do not unscrew button of mixer cup.3. Do not drink without lid on mug. Main Material: PP, Silicone, Motor, Stainless Steel Cup Height: 20cm / 7.87" Cup Mouth Diameter: 8.5cm / 3.35" Cup Bottom Diameter: 6cm / 2.36" Total weight: 530g / 18.70oz Recharge Type: USB2.0/3.0 Connector(DC 5V) Battery: 2 AAA Recharge Li Batteries Cup Capacity: 450ml / 16oz Package Include: 1 x Shaker Bottle, 1 x USB Cable, 1 x Box