But not enough: Due to the frequent agitation and the consequent pressure on the lid, under which a contact switch is, through which ensures that the machine can only be switched on when the cover, said contact switch inside broke off. So, I thought, broken as broken can not, so I can try to repair the unit. Do not try this, am electrician. I solved the case and found that the contact switch is only fitted with a thin, cheap plastic holder. For a device in this price range I could not have imagined a better solution! But the repair was simple, and the coffee grinder is working again :)
As for power consumption, I agree with the previous speaker, I always pull the plug after use, even the remaining beans not to heat and thereby render it unusable.
So Design 5 points, 3 points function, maintainability 4 points, making a total of 4.