Picture:
At the highest resolution (1080p / 60fps), the image is razor sharp. No stuttering or distortion. The video runs smoothly. In the print resolution 720p / 120 fps slow motion can record videos. In Photo mode, photos with 16 MP can take ... these are razor sharp.
Audio:
Audio recording is not really good. People who are 3m away are barely understand (at normal ambient noise). However, you can connect an external microphone to the camera in order to improve the recording quality.
But what less important: When the WLAN, it comes when shooting massive audio interference. It has been consistently a crack in the complete recording. I think that's something you could fix with a firmware update.
Operation:
The operation is really easy. You have to deal with the camera and already you know what buttons you need to press to see without them (helmet camera holding) only 10min. From the App Store you can suck the matching Replay app. With the app, all settings on the camera 's no problem, you can see the current live image and you can delete files directly from the camera. Theoretically, you can also stream videos directly from the camera to your smartphone, but what ever long does .... so no use.
Accessories and attachment:
The accessory is really all doing what we can do. With other cameras much to have to buy, here the most important thing is. The! Various brackets (movable or fixed) sit, once installed, bombemfest at the helm.
Conclusion:
The best helmet camera on the market. Perfect for motorcyclists, bikers, Paintballer and skiing / snowboarding. It is much smaller and more aerodynamic than the GoPro's example. Only the Sound is the weak point, but that can be cope.