Feb 14, 2017 · The YI 4K Action Camera can capture 4K/30p video at up to 100Mbps as well as 12MP stills. It has an all-glass lens with 7 elements and a F2.8 maximum aperture, with an electronic IS system to smooth out video. Photos and videos can be viewed on a 2.2" widescreen touch-enabled LCD. Dec 28, 2020 · 9to5Toys - YI Technology (98% positive lifetime feedback) via Amazon is offering a 4-pack of its 1080p Home Security Cameras for $62.99 shipped. For comparison, it normally fetches $80 and today’s deal is less than $1 above the all-time low that we’ve tracked.