Very nice 4K action camera
Advantages: I bought this item in pre-sale a lot of months ago and initially was not available a waterproof case, but now i have it! I go by kayak crossing rivers and falls in the winter, so i made a lot of videos using this very beautiful camera. Video quality is very fine, images quality could be better, but i don't need for photoes but only for videos. The battery is fine working for around 45 minutes recording @2k, in 4k i have never used. Remeber that the EIS (electronic image stabilization) works only on 1920@1080 mode, even in 50fps or more.
Limitations: EIS working only on FULL-HD and photoes quality could be better!