The handle is so light! Active tips! Heats up in 2 seconds. Goes to standby mode when you put away the handle to save the tips.
There's even a lighter compatible precision handle that you can buy.
Luke Gorrie posted a bunch of Twitter threads where he compare the sizes of soldering handles. Can't find it now but https://github.com/lukego/soldering might lead you to them.
I'm still using Sourcetrail daily for inspecting C++ codebases. Works great. I paid for the first beta and was very sad that the company was not profitable. It really is a great product.