New in box lucky leash

these things are incredible!! it's a dog collar that has a magnetic retractable leash. I bought one for my grand dog because he's a runner and it's so easy and convenient. I loved it so much I bought multiple in case it messed up fast then I could replace it but it's lasted so long now I think I can let a few go. would be great for the river, or in case you need to just grab your dog quickly workout having to attach a leash.