The price performance ratio is great! A great invention that you can mix it immediately in the drinking container! And do not scare if you use it without reading the manual! This should be done, as you might think otherwise it's broken! The arrival off switch can only be operated if one purely rotate the cutter otherwise the device! There are two ways! Otherwise he mixes without end !!!!!!!! The bottle is not only close to thick drinks but also when the fruit juice diluted with water! It's quick and easy to clean, so you also have fun with it to use it every day! thumbs up! Definitely a nice device that I would always order me again!