This is a brand new Aiper Seagull 3000 swimming pool cleaner. Please don't think that because it is cordless that it will be underpowered. It has a 1200w motor so is the same power as corder cleaners and runs for 2 hours.
Search Seagull 3000 pool cleaner on you tube for honest unbiased reviews, I haven't been able to find a bad one.

The clever bit is the battery floats on the surface of the pool and is towed behind the cleaner, this means the robot is much lighter and has no problems climbing the walls. The cable is 8 feet long so your pool must be 8 feet or less in depth.

Because it so much lighter than a normal cleaner is is very easy to retrieve from the pool and it had 2 top loading debris baskets so you don't have to struggle turning the robot upside down to empty and no awkward bags to clean.

No trailing lead going to the pool which is also a trip hazard. The cables on corded robots normally get twisted and this causes the cable to break internally and they can cost up to £450 + labour to replace, because this cable is only 8 foot long and trails behind the robot it can't get twisted or tangled.

On the box it sates that the robot is bluetooth controlled so that you can guide it a dirty section controlled by your phone. However at the moment the Wiper app isn't working for this model, I have spoken to them and they are working to solve the problem with the APP and will reissue it later but I would suggest that you consider that this robot does not have bluetooth. It does not need it to operate.
Check out the you tube videos.
These were selling in the USA for $1250, grab a bargain