HAVIT's HV-KB39 keyboard is a mere 23mm in height, for those who have a desire for slim devices.  It uses Kailh Choc PG1350 Blue mechanical switches which are relatively unique in that they offer tactile feedback when travelling both up and down.  If you are interested in seeing how these switches work, TechPowerUp completely strip the keybaord in their review to show you the innards in all their glory.  Check it out right here.

"The HAVIT HV-KB390L is a new low profile mechanical keyboard based off the 87-key TKL form factor. It uses Kailh's new Choc PG1350 low profile switches, has an aluminum alloy frame/plate, a lightweight software driver, and customizable backlighting; all at a great price point."

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