Review on Exploring Beneath: Underwater Camera FHD 2.7K 48 📸 MP for Snorkeling - Selfie Dual Screen, LCD Displays (806BC) by Jeremy Romero

We bought 2 of these cameras for our kids for a special snorkeling vacation in Mexico. They only turn on when connected to the network, and no matter how long you leave them connected to the network, they retain no charge when disconnected from the network. And how are the photos saved? There is no "SIM card" in the camera, nor instructions. We couldn't use it on the trip. We were supposed to have bought an extra component which I missed for some reason so I checked online when I got back but can't see anything I missed. I tried emailing the company but got no response and by the time we left for the trip these cameras were too late to come back. A complete waste of money. I will update my review if someone from the company can get back to me with an explanation of if BOTH cameras are defective or instructions on how to use them.