Is the mini 4k a decent drone?

Also is the micro sd card really necessary for the drone?

It’s fantastic. I kept mine even though I have much better drones now.

It’s a great drone, and yes, you need a micro SD card to record footage.

It’s awesome! I have the DJI Air 3S, and I got the Mini 4K. Each serves different purposes.

For the average user, it has everything you need. It’s a great drone.

I believe it has some onboard storage, but it’s really limited, maybe for about 2 minutes of video.

The SD card isn’t required, but without it, you can’t record video or take pictures. Get the user manual here https://dl.djicdn.com/downloads/DJI_Mini_4K/DJI_Mini_4K_User_Manual_v1.0_EN.pdf

Honestly, I think it really depends on how you plan to use it. If you’re just flying for fun, it might be enough. However, if you’re serious about aerial footage, you might want more.

It’s pretty good for what it costs but compared to a Mini 4 Pro, there are some big differences.

No and yes. You might get some use without it, but really, you’re better off with an SD card.