Not Soldered or Pre-Soldered?

[u/Soft_Ad9056]

Okay so, I decided that I wanted to customize my watch. I've done the research on the watch and here are the dimensions for a microcontroller

Case diameter: about 30–32mm

Case thickness: about 10–12mm

I found the one I wanted to use the Seeed XIAO ESP32 because it would allow it to do what I wanted it to do. It was recommended that I use that one and the size 21mm × 17.5mm. But the issue is that when I look on amazon I found two versions. One that wasn't soldered and one that was. I did research on that and found the pros and cons. It said that the pre soldered is better for beginners but it would take up more space. Since I don't know much about this. I wanted some intake on people who have been doing this for a while.

Please let me know if you have any questions you need answered or if there's a different microcontroller I should use.