DJI's new Mini II drone is light and cute. We took it for a test flight, and here's what we learned.

The DJI Mini was the best-selling drone ever for DJI, which dominates drone sales. So, what to do for an encore? How about higher resolution, as in the ability to shoot in 4K video, and a larger image sensor. Like the original Mini, the new Mini II is about the size of a smartphone, making it an easy fit in a backpack. Based on an early look, the Mini II is certain to be another big seller. DJI says the added price is for the higher resolution sensor and 4K video.