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It's a brand called Rexus but they're using Outemu brown switches, so technically you can buy any brand with that switch and it'd sound the same :D

LOL... just realised (I think) one of my children has one (different version I think). I have to check with him.

ooooh wow! I wonder if he has red/blue switches, that must've been loud haha

It's loud!

That's gotta be the blue switch.