A nice gadget even if it has some imperfections

The interior is clean with a brushed stainless steel surface and a small propeller translucent plastic. A gray rubber flange prevents the liquid from reaching the engine while leaving lhélice rotate freely. A button, a little hard for my taste, is placed on top of lanse. We must keep it pressed to operate the mechanism that activates lhélice. The cover is made of plastic with a seal to close the well quune hatch on top to drink without having to open it. Everything is covered of a metallic banding for finishing.
It requires 2 AA batteries (or LR03) that fit below the cup under a rubber cover. There is no notice and all important details are listed directly on Chinese package. Too bad, because if there were security details to know, this is missed.

Use

Holding down engine button, a small vortex is created gradually on the surface of your drink, and then the appearance of a vortex is observed. Nothing daffolant however, you will not see your coffee fly in the face of your colleagues (even if it is rather fun) This is therefore a gimmick, not an object of farce and catches. The engine is smooth thus generated noise is quite discreet. However Avoid leaving agglomerate powder cappuccino in the background and let soak your sugars seconds before triggering the turbine mechanism.
Contrary to what is stated by the manufacturer, the filling amount is 250ml (1/4 liter), verification made by means of a measuring cup. The lid is not tight, despite the planned joint. Therefore, avoid carrying your cup in your purse but wander here by hand to avoid accidents. Even if the battery cover is well fixed, it nest absolutely airtight so beware washing your cup in hand do not immerse it in water dishes. Also, go easy with sponge because lhélice is fine so certainly fragile. Needless to say that the dishwasher is prohibited.

Verdict

A cool gadget, not especially critical but fun. The time saved in not wanting to wash a spoon is lost lhélice thoroughly clean the bottom of the cup ^^ This cup is a real geekerie that allows to maintain his goofy side in the office!

Conclusion

(+) Brushed stainless Interior very clean.
(-) Indications in Chinese. The lid is not airtight.