This is an easy printable watering can. It needs some little support under the spout, so you have to turn normal support on.
To get it water proof you should either print it in ABS and vapour smooth it, or you have to clear coat it. Perhaps you find some slicer configurations to get it water tight with no extra measurements at all. But be aware of this issue.
I printed it in ABS with 0.28 mm layer hight in about 22h. You can easily scale it down to 60%, but 80% is a quite small and useful little can with about 500ml(?) and prints in ~14h. I didn't figure it out, yet - to be honest.