Godefa Cell Phone Camera Lens with Tripod+ Shutter Remote,6 in 1 18x Telephoto Zoom Lens/Wide Angle/Macro/Fisheye/Kaleidoscope/CPL, Clip-On lense Compatible for iPhone X 8 7 6s Plus, Samsung and More : Electronics
Amazon.com : 2X Telephoto Lens, Magnification HD Converter Barlow Lens for 37mm Mount Camera, Doubles Camera Zoom : Electronics
Zoom Lens HD Super Telephoto Lens Universal 52mm Professional Digital Camera for Gopro GOPRO 3+ 4 for Xiaoyi 렌즈 объектив apexel|Camcorder Lenses| - AliExpress
Polar Pro Macro Lens for Hero5, Hero6, Hero7 | Bluewater Photo
What would happen if I were to put a variable zoom lens on a case similar to this one? : r/gopro