Yi’s original action cam is a longtime reader-favorite, and one of my personal favorite gadgets to boot, and you can pick it up for $52 from Amazon with promo code HIXBTO3.
Plus, you can also add a spare battery to your cart when you buy the camera, and get it for free.
This model doesn’t shoot in 4K, but it does feature 1080/60, and the footage and photos it takes look fantastic. You can even control it wirelessly with your phone, or transfer your captures over Wi-Fi for instant sharing.
If your action cam needs are considerably more advanced, consider the Yi 4K bundled with a gimbal stabilizer for $350 with promo code V673WQ4G.