Looking for a good screen recording software/app for Windows — any recommendations?

Hey everyone, I’m trying to find a reliable screen recording tool for Windows and would love some suggestions. Here’s what I’m looking for:

• Can record audio (mic and/or system sound)

• Let me choose a specific area of the screen to record

• No watermark preferred

• Free would be ideal (but I’m open to affordable paid options)

• Can handle long recordings — planning to record university lectures (~2–3 hours). Even something with ~1 hour limit would work if necessary

• Doesn’t take up too much disk space

I’ve seen people recommend OBS, but I’m not sure if it meets the long recording requirement. Any recommendations or experiences would be super helpful — thanks!