Split bottle

I want to split this bottle someone an easy idea?

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Depends on the type of split you want, for separate the bottle cap you can use this method:

If you want break up the bottle you can use the knife tool:

Afterwards you can separate.

You can create a loop_cut and separate it using the V key

Thx everybody for sharing. It worked.
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Only when i put it in the prusaslicer or 3d builder it gaves some faults. Anyone an idea?

To split you also have the Bisect tool (if you hold-press the Knife tool on the T panel)