Yi Technology via Amazon offers its Yi 4K 12-Megapixel WiFi Sports Action Camera for $199.99. Coupon code "YI4KPROF" cuts it to $179.99. Plus, free shipping applies. Features include a 2.2" LCD, up to 4K video recording at 30fps, 12-megapixel photo resolution, 155° wide-angle lens, WiFi, and microSD card slot. It ships with a waterproof case.