leaning vacuum / handy vacuum

Leaning Vacuum is a handy vacuum cleaner which informs the cleaning time.

It’s hard to recognize tiny dust in daily life, so we cannot know visually when we have to clean.

Leaning Vacuum measures the amount of dust in the air and lets us know the cleaning time by tilting its own body.

What users have to do is just to start cleaning their houses when they find out the vacuum is leaning.