Getting the right Micro SD Card is essential to the quality of your video recording experience with your new drone. Basically you want to have Class 10 with a high transfer rate.
The quality of video you are trying to capture, (720, 1080, 2K, 2.7K and 4k) will determine how fast your transfer rate should be to get the most out of your flight experience.
Transfer rates of 90 and above is good place to start, with tranfer rates going as high 180. Higher quality video requires higher transfer rates.
If your not sure what this means, check out this article on the San Disk website that explains SD Card ratings.