Keychron J2 75% Wireless Mechanical Keyboard, Black, Super Red Switches, Hot-Swappable RGB, QMK, 2.4 GHz, Bluetooth 5.2, USB-C

Expert Features 75% Compact Layout: 83-key ANSI layout keeps the arrow keys and function row while saving desk space. Triple-Mode Connectivity: Switch between 2.4 GHz wireless, Bluetooth 5.2, and USB-C wired connections. 2.4 GHz Gaming Response: 1000 Hz polling over 2.4 GHz and wired modes helps keep input responsive; Bluetooth polling is 125 Hz. Connect Three Bluetooth Devices: Pair the keyboard with up to three devices, such as a computer, phone, and tablet. Keychron Super Red Switches: This variant uses linear Super Red mechanical switches for smooth keystrokes. Hot-Swappable Version: KJ2-H1 is the RGB hot-swappable version, allowing compatible 3-pin and 5-pin MX-style mechanical switches to be changed without soldering. QMK and Keychron Launcher: Remap keys and configure macros and shortcuts using Keychron’s web-based Launcher. Last Key Priority: LKP prioritizes the most recently pressed directional key for quicker directional changes in supported gameplay. Customizable RGB: Choose from 22+ RGB backlight options, including static white, and adjust lighting effects through Launcher. PBT Keycaps: Double-shot PBT keycaps are designed to resist oil and keep their legends from fading. Mac, Windows and Linux Ready: Use the system toggle and included Mac and Windows keycaps to adapt the layout. Adjustable Typing Angle: Choose from three typing angles: 4.5°, 6.4°, or 8.8°. Long-Running Battery: The 4000 mAh battery is rated for around 300 hours with backlighting off, or around 168 hours with RGB at lowest brightness; actual use varies. Expert Specs Specification Details Brand Keychron Model J2 QMK Wireless Mechanical Keyboard SKU KJ2-H1 Variant Black; RGB Backlight (Hot-Swappable); Keychron Super Red switches Layout ANSI, 75% Number of keys 83 Multimedia keys 12 Switch type Mechanical, Keychron Super Red Switch face North-facing Hot-swappable Yes; hot-swappable version Compatible replacement switches Most 3-pin and 5-pin MX-style mechanical switches, including Cherry, Gateron, Kailh and Panda Keycap material Double-shot PBT Keycap profiles Cherry or MDA, depending on keycap option Frame material ABS Connectivity 2.4 GHz wireless, Bluetooth, USB-C wired Bluetooth version 5.2 Bluetooth device capacity Up to 3 devices Bluetooth device name Keychron J2 Polling rate 1000 Hz in 2.4 GHz and wired modes; 125 Hz in Bluetooth mode N-Key Rollover (NKRO) Yes, in wireless and wired modes Backlighting 22+ RGB options, including static white Battery 4000 mAh rechargeable lithium-polymer Wireless working time, backlight off Around 300 hours; lab result, actual use may vary Wireless working time, RGB on Around 168 hours at lowest brightness; lab result, actual use may vary Compatible systems Windows, macOS and Linux Typing angles 4.5° / 6.4° / 8.8° Dimensions 332.3 × 139.92 mm (13.08 × 5.51 in) Weight 808 g (1.78 lb) Front height, including keycap 20.7 mm (0.81 in) Rear height, including keycap 41.34 mm (1.63 in) MCU WB32F3G71RCT6, 256 KB Flash Operating environment -10°C to 50°C