This is an excellent bubble machine for the money! It's a big jump up from the 'toy' ones you find in stores, I would not call it 'pro-grade' but I would not be reluctant to use it in a pro setting as dollar for dollar it's a very good machine...Consumption, I see in a lot of bubble machine questions people want to know the consumption and run time... I needed to know this as well for my upcoming event, so I did some test runs and did the math... The tank is 650ml to the full line (you could probably overfill it to the advertised 750ml, but I would not as that is real close to overflowing into the motor) that said for my test I only filled it with 650ml of the solution to the full mark with generic store-bought bubble solution... This left about 450ml of useable bubble solution as the bottom 200ml of the tank is below the wands... In my test consumption with generic store-bought bubble solution was about 10ml a minute aka about 45 minutes of run time on the usable 450ml of solution in the tank... With a thicker "Big" bubble solution you will probably get less run time, but a thicker solution isn't needed, so run it thin...Some are upset that this is not rechargeable but uses regular batteries, if you desire something that is rechargeable a decent phone USB power bank will work as it uses a standard USB charger cable...The only thing left for me to do now is see how well it last over time, I will be running it for about 12 hours straight shortly, I don't expect any issues but if I do have one I will update this review...We used these bubble machines on the first day of school at our entrances. The kids loved being greetef by staff and bubbles. We will be using these on a regular basis for different activities, such as PBIS celebrations, assemblies, parades. Who doesn't love bubbles.My granddaughter and I set it up, turned it and she ran off screaming " It's a bubble storm papa! Ruuuun!". Priceless I say...this product is the best Had three different kind in the past and what a waste. seen this one at a Easter Seal graduation and love it was told they got it on amazon and many parents had purchased it.. I have 9 grandchildren and they love it. Like the batter idea not sure how long the battery last but use it off and on for three days and still going like the idea there was not a cord to trip over because they danced around it. I had the gazillion bubbles and it put out gazillion which in the sun light it looked different colors. even had one sent to my granddaughter. thank you for making a product that is made well and the children enjoy it.The product did what it needed for what I was looking for. Batteries lasted for over two hours and I only needed to refill it once during the parade route.It was great while it worked! Grandkids had fun. Then it died. Received a replacement quickly but have not opened it yet and between being busy with work missed the return by two days. Am I optimistic that the new one will work and continue to work, no. Unless I had a defective one. Save your original packaging and slips!This bubble machine is far better than others I've tried. It has a large reservoir, is easy to use, quiet, and puts out a ton of bubbles!The wireless bubble machine comes with a remote control that has a retractable antenna and two buttons, "unlock" and "lock". With the switch on the bubble machine set to "on", then the "lock" on the remote makes it stop and the "unlock" releases it to go again. I think the labels are a little confusing but once you get used to it it's pretty straightforward. I like the plastic slider on the remote to prevent accidentally pushing the buttons, as well as the mini carabiner clip that lets you attach it to the bubble machine when not in use.My only complaint about this bubble machine is there's no way to pour leftover bubble solution back into a container with out leaks everywhere. Because this bubble machine is a side design, you have to fill the reservoir at least to the point where a bubble wand head, on its side, is fully submersed. This means you will always have a fair bit of solution remaining. When I tried to pour unused solution back out, the reservoir leaked out the sides, which I found strange because there was no issue with leaks while using it.I'm going to have to use something like a turkey baster to remove remaining solution. I'd like to see a better design so that I don't have to waste bubble solution.The bubbles blow out the front sideways, so you're going to want to place this machine up high. There is very little noise, unlike others I've tried. This one is the winner!This thing makes a TON of bubbles!!!It is easy to fill, and the remote makes it very nice to be able to mount it on a stage and turn it on from a dj booth on the other side of the room. Hit the button and even a large stage is filled with bubbles almost instantly. Definitely a professional level machine!!!The only negative I can say? The bubble juice spills easily, as there is no enclosed space or splash guard for it.