OKP Life K2 Robot Vacuum Cleaner (Open Box)

Updated Update: After 6 months the robot is completely dead. It doesn't turn on and it doesn't charge. The charging base has power and all the sensors are clean, but when the robot is on the base it does not charge. Fortunately OKP has a 1 year warranty and Amazon told me to contact them for a repair or replacement. Great, right? Apparently not, because OKP decided to not respond to my help request at all. Amazon followed up with me to see if they had fixed the issue and I told them they hadn't. So Amazon has offered me a partial refund. So I send the broken robot back to Amazon, they give me a partial refund, and I am left with nothing and am out $40. OKP doesn't back their warranty, and you can't get a full refund or replacement from Amazon after 90 days. There are many other reputable robot companies, but this is not one of them. ------------------------------------------------------------------------------------------------------------------------- Update: After using this for a few months now, I kind of hate this little robot. I'll be honest, the company advertises that if you leave a 5 star review they'll send you a free gift (which is actually illegal to do according to the FTC, and against Amazon policy). But I did leave a 5 star review and sent it to OKP, but never received a gift from them. I suspect most of the 5 stars are because of this bribe they're offering. Take them with a grain of salt, as I now know I should have done. Compared to my other robot vacuums, this one is the least effective. It's smaller, much lighter (the plastic housing feels thinner/cheaper), but also less powerful. It drives slower than my other robots and only lasts about 30 minutes, whereas my other robots will run for a couple of hours. It has different power settings and I keep it on the lowest power setting. If it's on high then it won't last 30 minutes. I find this robot is best suited to cleaning one small room, but it definitely can't handle an entire floor or even one large room. I'm using this one now in my small bedroom (10x11) and that's about all it can handle on one charge. I originally loved that it didn't have a brush roll, and that's why I bought it. Then I realized that I could just take out the brush rolls on my other robots and I'd end up with a more powerful version of this little guy that just works better. The biggest problem is that if it stays on the charging dock for too long, then it stops charging but the battery slowly drains. I was trying to use it once a week, and every time I tried to start it, it was completely dead (while still on the charger). To get it to work I have to take it off the charger, place it back on to get it to start charging again and then wait a couple of hours to start running it. If I don't run the robot the same day it goes on the charger, it doesn't retain enough battery to run. It's not really a hands off system since I have to plan out when I'm going to reset the charging and then time it out to come back to start the robot before it starts draining power again. It's incredibly frustrating. Do yourself a favor and buy a more expensive model that will just work whenever you need it to. -------------------------------------------------------------------------------------------------------------------------- Original review: Just got this robot and so far I'm pleased with it. I've had 3 other vacuum robots by other brands. This robot is smallest but the dirt chamber is the biggest My favorite part is that there is no brush roll. On one hand there's no brush to "scrape" dust off the floor. I don't have any carpets so that's not a main concern for me. But I have pets and long hair and I spend every day pulling hair out of my other robots. I love not having to deal with that with the OKP.