Got a GoPro Hero4 to record some video for YouTube. It's a great camera. Small, waterproof, great quality video, a ton of different mounting types. The Hero4 I have has an odd issue where videos recorded with WiFi enabled have ticking sound throughout the recording. Googling for the issue turned up a ton of similar issues , some reported a year ago across a range of GoPro cameras. It was surprising to me that new models like the Hero4 would have the same issue. Update : Received a replacement through Amazon, where I ordered it from, and it has the same issue. I had contacted GoPro but they won't do cross shipping, even if you offer to pay for the replacement. Without cross shipping it would have been a couple of weeks wait for the shipment there and back on a camera I've had for less than a week. It seems like there might be something wrong with the design of these cameras and I'm surprised GoPro hasn't owned up to it. Its not a debilitating defect...