Unfortunately I kan not confirm the previous reviews. Mixer number 1 I had to use 1 time to return because of a loose connection. Mixer 2 worked perfectly at the beginning - now allows the power to. With Smoothies I have to stop the machine again and shake, because otherwise all the ingredients to be caught by the blade. In addition, the processing of the device is not the best. Everything seemed very unstable and fragile. Especially when installing the glass mixer you always fear the plastic attachment with the knife breaks off. The rotation mechanism with which the mixer is hacks in the unit also a science in itself. Time It's properly times you have to turn turning unscrew ....