if you have 70 year old parquet and quarry tile floors you don't even need to kick it - it just wanders around on its own through-out the house, catching irregularities on the surface- quite mesmerising. After 30 minutes of watching,we did start to kick it around- so much fun!!! After 39 min and 16 secs it did start to seem a bit tired but did not give up until 43 mins, it stopped floating but did keep its fan going and bravely flashed its lights!!! Amazing - I assumed it would run for 5 mins - it must have a huge battery!!!- and yet perfectly balanced. You absolutely have to buy one of these - I have ordered one for my grandchildren- they will love it!!!