| Brand | Keychron®︎ |
| Price | standard |
| JIS/US | US |
| Keyboard Size | 96%Full |
| Key Profile | normal-profile |
| Key Sounds | clicky, tactile, silent |
| How to Connect | Bluetooth, USB |
| Battery | usb-power, rechargeable |
| Hotswap | hotswap-available |
| Normal or Split | 非分割 |
Comment
- January 10, 2023 Release
- $89(Barebone/RGB Backlight)-$109(RGB Backlight)
- 96% array model
- Even though it bears the name Pro, it is also QMK/VIA compliant and allows for keymap changes.
- Sound-absorbing foam and silicone bottom pad are built in for quieter keystrokes than the regular Keychron K4
- Key switches are Keychron K Pro.
Buy it here: Keychron K4 Pro (keychron.com)
Types of Keychron and how to choose ▷▷▷
Difference between K4 and K4 Pro
| K4 Pro | K4V2 | |
|---|---|---|
| hot swap | support | incompatible (Compatible models also exist.) |
| QMK/VIA | support | incompatible |
| typing angle | 3º, 7º ,10º | 9° only |
| key switch | Keychron K Pro | Gateron G Pro 2.0 |
| frame | Aluminum frame (approx. 5 mm) | Aluminum bezel (approx. 1 mm) Only for models equipped with *. |
| Keycap Material | Doubleshot PBT | Singleshot ABS |
| key profile | OSA | None stated |
| key layout | ANSI (US sequence only) | ANSI /JIS |
| Wireless connection uptime (Backlight off) | 300 hours | 240 hours |
| size | 390.6 x 139.2 mm | 371 x 124 mm |
| weight | 1280 g | 770g |
仕様詳細
| Number of Keys: | 100 (96%) |
| Switches (Not including Barebone Version): | Keychron K Pro Mechanical |
| Switch Face: | South-facing |
| Stabilizers: | PCB-mounted screw-in stabilizers |
| Number of Multimedia Keys: | 12 |
| Frame Material: | ABS |
| Plate Material: | Steel |
| Keycap Material (Not including Barebone Version): | Double-shot PBT |
| Keycap Profile: | OSA (OEM profile with spherical-angle) |
| Layout: | ANSI |
| Polling Rate (Wired Mode): | 1000Hz |
| Polling Rate (Wireless Mode): | 90Hz |
| N-Key Rollover (NKRO): | Yes for both wireless and wired modes |
| Backlit: | 22 types of RGB backlight options plus endless possibilities |
| Battery: | 4000 mAh rechargeable li-polymer battery |
| BT Working Time (Backlit off): | Up to 300 hours (Lab test results may vary by actual use) |
| BT Working Time (RGB): | Up to 100 hours (Lowest brightness) |
| Connection: | Bluetooth and Type-C cable |
| Bluetooth version: | 5.1 |
| Bluetooth Device Name: | Keychron K4 Pro |
| Compatible System: | macOS/Windows/Linux |
| Dimension (Plastic frame version): | 390.6 x 139.2 mm (15.38 x 5.48″) |
| Weight: | About 940 g / 2.07 lbs |
| Dimension (Aluminum frame version): | 316.6 x 126.91 mm (12.46 x 4.99″) |
| Weight: | About 1280 g / 2.82 lbs |
| Height without keycap (front): | 24 mm (0.94″) |
| Height without keycap (rear): | 31 mm (1.22″) |
| Height incl. keycap (front): | 33 mm (1.30″) |
| Height incl. keycap (rear): | 40 mm (1.57″) |
| Typing Angle: | 3º, 7º and 10º |
| MCU: | Ultra-low-power ARM Cortex-M4 32-bit STM32L432 (128KB Flash) |
| Operating Environment: | -10 to 50°C |
Information reference: https: //www.keychron.com/products/keychron-k4-pro-qmk-via-wireless-mechanical-keyboard
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Selectable axis types
Keychron K Pro mechanical switches
| Red Switches | Blue Switches | Brown Switches | Banana | |
| pressing pressure | 45±10gf | 60±10gf | 50±10gf | 57±8gf |
| Movement to operation | 2±0.4mm | 2±0.4mm | 2±0.4mm | 2.2±0.4mm |
| keystroke | 4±0.4mm | 4±0.4mm | 4±0.4mm | 3.3±0.2mm |
| reaction | linear | clicky | tactile | early bump tactile |
| sound | quiet | clicky | gentle | gentle |
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