What would be a good swap for this driver?

I have a "Gabriel" flashlight that shorted out the driver. It's a 20mm driver. The flashlight is a 2x18650 zoomie. I'd like to just swap it out but I don't know what to get. Hopefully something off the shelf from Mountain Electronics. I have no idea what emitter is in it. I do not know anything about this kind of stuff but I would like to tinker with it. This might be a good start.

I have to figure out how to attach a picture to a post. Back in a minute..

Hopefully, this will work.
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!Imgur: The magic of the Internet!