Keychron K3 HE & K3 Ultra: Slim Wireless Custom Keyboards

Hall-effect magnetic switches and 8K polling in a slim low-profile board is what Keychron's K3 series sets out to do — without losing the thinness or the beauty. Two models launch together: the K3 HE uses Keychron's Ultra-Fast Lime low-profile magnetic switches, where hall-effect sensing defines each keystroke by distance rather than contact, with per-key actuation adjustable from 0.2 to 2.9mm at 0.1mm precision plus spare ESC and Enter caps; the K3 Ultra runs pre-lubed Milk POM low-profile switches, headlining 8K Hz polling and a 550-hour battery. Both share one design — natural rosewood accents on a precision-machined metal frame, balancing organic warmth with industrial rigor. It's custom-grade precision and flagship speed packed into a slim wireless form. Launched in February 2026, it drew 2,044 backers and $284,900, about 2,849% funded.