Great for about 2 weeks

I use it for about 2weeks was amazing while it worked i only used it a couole times i used shock mode one time on a liw number and used the vibrate mode 5 times and the beep sound work good for our 75 pound 10 month old pitt bull puppy and he is bigger than most but it did work well while it lasted. I would love to try another one im wondering if mine was defective it worked right outbof box but u some time had to push butons multiple times for reciever to respond and dog was in 15 feet from me and the remote plan view no ubstruction in the way in a open yard. I also have a pit/boxer 3yr female i tried it on her it worked well she is about65 pounds i would love to see if they are offered in a twin pack so i can use on both at sametime i am going to trybto contact seller to find out if mine was just defective and see if we can get it replaced and try again if thats the case i will come back and update on the non defective device. Mine worked so so then just stopped working wont charge or turn on. Nithing we hae tried several time to no avail hope to be able come backand leave a better star rating and more details on how well it works when not defective stay tuned