Review on Lucky Portable Sonar Fish Finder: Waterproof Handheld Wireless Fishing Finder for Boats, Kayaks, Ice Fishing, and Sea Depths by Matthew Perez

I received this product because my phone screen is cracked and it is no longer waterproof. Lucky's phone is waterproof, but unfortunately the float with the sensor that needs to be in the water is not waterproof. I have used it 3 times. I screwed the lid on as tight as I could each time and each time there was some water inside where you plug the charger. The fourth time I used it it didn't work. The O-ring used is too small or just poor quality. I recommend buying something that you don't have to open to charge.