The action cam—aka POV cam—segment has long been dominated by a single brand. Now, a contender that might really shake things up has arrived. Yi, which has the backing of Xiaomi, has released the Yi 4K Action Camera and it’s proven to be quite a rival for the incumbent king of action cams. This small camera can record ultra-high-definition 4K videos at 30fps and 1080p at 120fps. It can also take 12-megapixel still shots. To be fair, the Yi 4K does leave out some features that many have come to expect from gadgets like this, like GPS, voice control and auto uploading. That being said, the responsive touchscreen, big battery and fast transfer speeds more than make up for those shortcomings. All in all, the Yi 4K Action Camera is a very viable option for adventurers looking to record their latest extreme exploits.