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Keychron B4 Pro Ultra-Slim compared with Keychron Q1 Pro
Spec Keychron B4 Pro Ultra-Slim

Keychron

Keychron B4 Pro Ultra-Slim

$40

“Ultra-slim 96% wireless board with 1000Hz and no backlight”

Keychron Q1 Pro by Keychron

Keychron

Keychron Q1 Pro

$168

“The Honda Civic of custom keyboards”

Best Overall
Price , different $40 $168
Size , different 96% 75%
Type Barebones Barebones
Connectivity Wireless + Wired Wireless + Wired
Released , different 2025 2023
Mounting , different Integrated Plate Gasket
Case , different Not listed 6063 Aluminum
Colors , different Space Gray, Ivory White Carbon Black, Shell White, Silver Grey, Navy Blue
Weight , different 495 g / 1.09 lbs 1.74kg (fully assembled)
Dimensions , different 376.8 x 118.9 mm 327.5 x 145 x 35.8mm
Typing angle , different Not listed 5.2°
Front height , different Not listed 22.6mm
Switches , different Low Profile Mechanical
Profile , different Low Profile Standard
Keycaps , different ABS Double-shot PBT, KSA profile (fully assembled version)
PCB , different Fixed switches Hot-swap, South-facing RGB
Plates , different Not listed PC
Battery , different 800 mAh, up to 300 hours 4000mAh (up to 300h, backlight off)
Compatible switches , different Keychron low-profile MX-style 3-pin and 5-pin
Software , different Keychron software QMK, VIA, Keychron Launcher
NKRO , different No Yes
RGB , different No Yes
Features , different 96% layout, Tri-mode, Low profile QMK/VIA, Hot-swap, Double Gasket Mount, Aluminum Case, Bluetooth 5.1 + USB-C, South-facing LEDs, Screw-in Stabilizers, 1000Hz Polling (wired)
Good for , different Typists who want a light 96% for travel or the office Heavy typists who want a soft, cushioned feel Buyers who want QMK programmability with Bluetooth People who switch between Mac and Windows Anyone who wants to swap switches or tune the build
Skip if , different Gamers Anyone who wants backlighting or hot-swap Competitive gaming over wireless (90Hz polling) Anyone who needs a portable keyboard Buyers who want 2.4GHz wireless on this model People who prefer a low, flat keycap profile
Pros , different 96% layout with a numpad Light at 495 g (Keychron) Tri-mode with up to 300 hours claimed Flexible PC plate and gasket mount give a soft, bouncy typing feel (Tom's Guide) Full CNC aluminum case at 1,736 g assembled, so it stays put on the desk Bluetooth 5.1 for up to 3 devices plus USB-C; MakeUseOf found the Bluetooth connection stable QMK firmware with the Keychron Launcher web app for remapping and macros Hot-swap sockets take 3-pin and 5-pin MX-style switches 4000 mAh battery, rated up to 300 hours with the backlight off; Tom's Guide saw two to three weeks per charge Programmable aluminum knob, plus a system toggle and both Mac and Windows keycaps
Cons , different No backlight Switch type and software not stated on Keychron's page No review of this exact model found Wireless is Bluetooth only, at 90Hz polling; 1000Hz needs a USB-C cable No 2.4GHz option on the Pro; Keychron lists the Q1 Max for that Heavy for a 75% and not a board to carry around Tom's Guide heard a slightly hollow stock sound and occasional metallic pings Tall KSA keycaps raised mistype rates in Tom's Guide's typing test An r/Keychron owner report describes spacebar rattle from the stock stabilizers Tom's Guide called the $219 assembled price steep at review time (Nov 2024)
Research take , different A plausible slim numpad board, but only the maker's specs and a sibling review back it. Treat it as unproven. A comfort-first 75% that suits long typing sessions better than gaming or travel. Reviewers rate the build and typing feel highly and mark it down for weight, price and a stock sound that can ping. If you want 2.4GHz or magnetic switches, compare the Q1 Max and Q1 HE before buying.