The Yi Action Camera is very impressive. It boasts 4K UHD and 2.5K Video at 30 fps, 1080p up to 120 fps / 720p up to 240 fps, and 12MP Photos with 30 fps Burst Mode. Other features include an ultra wide angle lens (with in-camera lens distortion correction), electronic image stabilization, dual-band Wi-Fi & Bluetooth connectivity and video / photo time-lapse modes. The video and stills captured by the Yi are spectacular!
One of the best features of the Yi is the 2.19″ LCD touchscreen on the back of the camera. Unlike other action cameras, you can view, review, and change settings via the touchscreen.
This item will soon be available in Studio 300.