I bought two subnados. One unit was defective after about a week. The company replaced it after I sent pictures and I was very happy about that. My grandson at the age of five loves it. He swims underwater, and it has good power for a child, the adults used it also for locating Scallop beds when we went scalloping at Steinhatchee. It is certainly not as strong as many of them are, but we were very happy with the product.
