I like this product so much that when I misplaced the first one I bought it again. I only use the beep and vibrate options to remind my dogs not to ‘overbark’at things. A warning bark ir two is great, after that I beep them and if they don’t curb it then I beep and vibrate. I have a very large yard and the remote reaches then when I am inside the house no matter where they are outside, even behind buildings! The beep is loud and the vibrate can be set for various levels and different for both dogs. The remote is EASY to understand as well. Great product.

Works very well. Not cheaply made. Easy adjustments. Changed my Labs life, and mine too.

They work great very easy to pair to use.The first time if you have to use the shock function it will work if on your pet properly.Will say if you do use the shock your pet will forever know the cooler is on once you grab the remote.Just always use an alert before and after and they will associate what comes after the tone very fast!

Works great and has all the features & battery lasts a long time. The tone died on one of my previous collars but it’s so cheap I just bought a new set. Now I have 2 remotes.

We've had several different brands of E-Collars throughout the years (for AmStaffs) -price ranging from $35-$250; and Invirox® E-Collars are an exceptional Collar. And I believe that any one looking into purchasing an E-Collar should give Invirox® an opportunity to prove that their desire to serve your pets and you with integrity and genuine desire to offer Quality services and products is 110,000% above board!Before I get into Pros, let me share the only "Cons" I see:1. Remote is not water proof. Which is not big deal since I can put it in my Pelican Marine Series (IP68 Waterproof) case (sold on Amazon for less than $30!), and save a lot of money -when I consider how much it would cost Invirox® to make Waterproof Remotes, and that that cost would be passed on to us. So, overall this should not be a deal killer -it isn't for me, anyway.2. Before I expound on this one, let me say that I've spoken with Invirox® about this, and was told: "It is something we are looking into doing in our next iteration..." ) In other words, they're aware of it, and are listening to their customer's desires, and are addressing it -not merely saying "Sorry but, it is what it is!"And finally, I was given a suggestion to help remedy the issue, and it works pretty good. So don't let this dissuade your decision to try it -they have really given us the best of both an INEXPENSIVE product, with PROFESSIONAL qualities!Now for the "Con." It Beeps when turning it Off.The issue with that is that the Sound of Beep is similar to the sound given from a Warning tone of this and other E-Collars. So, when you're turning it off, the dog hears it, and immediately stopped doing what it was doing (even eating it drinking), and comes running to you, confused and unsure of what it did 'Wrong.' NOT GOOD!I learned that if I put my thumb over the speaker (easily identifiable on the back of the receiver -between the Prongs), that it will muffle the sound. And after trying it -as I watched the pups response, I found it to be an adequate Hack to remedy the issue. As the pup didn't even respond, because, though she heard it, she didn't hear the Intensity she was accustomed to hearing; and as everyone knows, dogs' heading is extremely acute, and they can indeed distinguish the slightest of differences in sounds. So, while I will be using the Hack, this E-Collar, in it's current status, still warrants continual usage. NOTE: In time, the pup will learn to ignore the "Con"and that won't even be an issue. But it is an issue you may liked to be aware of, so you're not surprised by it!Now for the juicy stuff -the "Cons."(Now would be a good time to grab a coffee or take a bathroom break before you continue, because you're going to Love this! I did!)1. Easy to Pair!2. Easy to Set!3. Remote is easy to Use. It is also sized/shaped close enough to a cellphone, I had the idea of getting a Phone case with a belt clip attachment for ease of carrying and overall use!4. The Remote goes to Sleep but wakes up really easy. Which saves the battery.5. The Remote offers Quick and Easy transfer from one dog to another: just push a Button. No Holding the button, and Waiting for it to Switch. No Switch to flip, that is easy to hit and switch without User knowledge. 6. The Tones: There are a Variety of different Tones offered -as well as levels of Intensity of their Sound. This is cool because it enables you to Train each dog with their Own specific 'Cue.' Which allows you to be able to Correct your dog without telling the whole world you're doing it.7. Every Corrective Level can be changed without pushing this button, then that button; all the while your dog is (or could) be in Need of Instant Correction -while you keep your eyes on it!For example: Your outside exercising your dog -and of course, covertly working on their training; and all of a sudden it spots something, and takes off after it. You hit the Warning, then the Vibration, and finally the Zapper... Nothing! Your dog's got tunnel vision, and is zoned in that object; oblivious to anything else. Well, instead of having to go through multiple steps to increase the level of Zap, which takes precious time, you simply hit the prominent Level Adjusting button, and your able to increase it Fast... Then do what needs to be done! Dog stopped and coming back without harm! What normally takes a moment, is now accomplished instantly -more or less, compared to the Others.8. Another thing I liked is that, while the Collars are the same Color, I liked how the actual Receiver has different colors. Which I didn't notice until After I put some acrylic paint on the clip of one of them! 😂9. The Rubber Prong sleeves have Tiny Nubs on them. Allowing the effectiveness of the Prong to get past the Fur and actually make Contact with the skin. Also allowing the collar to not have to be on That snug -like them Typical rounded ones!10. The Customer Service is phenomenal -even on Sundays! I sent an email to them, inquiring about whether the Collar Tone could be changed to Vibrate, when I turned it off; thinking they'd get back to me in Monday. But much to my (pleasant) Surprise, I got a response within a few hours. 😲11. Everyone that loves their pet, and is concerned about the Intensity of the Minimum level of 'shock,' (which I consider to not be a Shock, as much as it is a 'Nip.' But I won't get into semantics.I will however say this: Invirox® has the Lowest level of Intensity I've ever had!Point: (1) My older dog -a 75# Male Red Nose AmStaff from Gator lineage, is well accustomed to E-Collars, and pretty thick skinned. The 'Shock' level on his old Collar was at a 9-10; but on this Invirox® collar, it's on a 4/5.Now, here's the real meat and potatoes... My 8 month old 45# AmStaff, also a Red Nose out of Gator lineage, is a newby to E-Collars. The first time I nipped her On Level One of her first and only Other (old) Collar, she literally jumped like a bronc and screamed like a banshee...She eventually got somewhat more accustomed to it, to where she wouldn't scream; but she still jumped and ran around, not knowing wth was going on -and to this day, she Still refuses to go to the area where she first got nipped!Well, with Invirox's® collar, she responds, but she doesn't jump. Nor did she get panicked about it like the Old one: she's on level 2! (I use that slightly higher level, because I use the Nip as a Chastisement in order to teach them that disobedience has consequences they won't like. And it teaches them to Obey The Tone... So, while it's a comfort to know the Nip is available, it's even more comforting to know that I can now, FINALLY, use the E-Collar to it's fullest ability and actually Train them with it; without their (a) being afraid of the collar, and (b) distracted from their training.I know this is a rather long Review, and it's not my common type to leave. But this E-Collar setup warrants it!I highly recommend it -HIGHLY!