Please welcome Eyoyo Underwater Fishing Cameras.https://amzn.to/3siEgXn
I have the color one and have no problems with sunlight. It is a big help to see the lake contours on the map. I use it summer and winter. I bought a ram mount and use it in the boat as well. It is great for trolling because you can follow a contour or work a grid because it will show the trail you already trolled.
Doe's the H2O have a port that you can hook up external batteries or do you have to use the internal batteries?