Let’s get something out of the way: despite its name, the Potensic Dreamer 4K does not record 4K video. The drone’s camera sensor allows it to capture still photos at a 4K resolution (not a particularly big deal), but video tops out at 2.7K, or 2688 x 1512 resolution. Still, despite this unfortunate marketing bluster, this affordable quadcopter does have plenty going for it.
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https://www.techradar.com/reviews/potensic-dreamer-4k