Without much of the technical data, because you can read this indeed on the manufacturer side or in test reports, I would like to share my experiences with the camera yet. Mainly I have a camera for mounting on my helmet wanted, so I can record when motorcycling or with my kart racing videos. Since my helmet was expensive and I wanted to attach any holder by adhesive, a clamp holder was on the side below the basic requirement for the mounting. Previously, I had another camera mounted on the format of a GoPro and those with a lateral "Helmet-mount". This design with its long arm of different elements has ensured that I lost the camera in bumps or jostling. The leverage and the weight was just too much. And then I came across the Replay XD Prime X. Initially I found it slightly larger than expected. But after the first attempt to fix them by clamps on the helmet, I was thrilled. Sits super tight, is very easy to lock and weighs next to nothing. After the first kart race then the great joy: the image of the camera even in difficult indoor lighting conditions great, the sound is surprisingly good, that's what I expected worse. The service while she is at the helm, is very intuitive. I like that they vibrate differently when switching on or off various functions. That you get with even under the helmet and you always know what makes the camera straight. Overall, much better than my old camera.
In summary, once again the positive points, as well as things that could have been better: + Very easy + Good to install on helmet + Great HD picture + Sound is really okay for a ActionCam + Wi-Fi + Aluminum body, a quality image and stable + Waterproof to 3m, additional waterproof case available for greater depths + Vibration Feedback when operating o HeimLock holder with SnapTray tray (the best support for this camera) not supplied, but sold separately - Android App for controlling the cam does not work with Lollipop, crashes immediately - Recording of the holders not compatible with accessories from other manufacturers (other clip mechanism and different width at the Tilt Mount, so that eg Rollei or GoPro mounts do not fit)
Although there is still room for improvement here, I am very satisfied with the camera and it fulfills exactly what I hoped for, so the full credit. For me, the best and most sensible Action Cam on the market.