Meet the YouCan BW1 ROV: an underwater drone that lets you capture beautiful video under water. It comes with 4K video capture capability. YouCan BW1 has up to 5 hours of battery life. It comes with a tether and WiFi extender that make transferring images and videos to your mobile devices easy.
This underwater vehicle is compatible with GoPro. You can also attach LED lights to do more with it. The companion app lets you control the ROV, including its speed and light intensity.[where to get it]