Redragon CASTOR K631 vs CASTOR K631 ProWired vs Wireless 65% Choice
Choose the K631 Pro for wireless flexibility or the standard K631 for a simpler, slightly lighter wired setup.
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Which one should you get?
Get the
Redragon CASTOR K631
Wired
Build quality in the bottom 35% of 65% boards under $50.
- Includes four extra Outemu red switches in the package for immediate modding.
- Comes with both a dedicated keycap puller and a switch puller.
- Slightly lighter weight at 430 grams.
Get the
Redragon CASTOR K631 Pro
Wireless 65% Choice
Build quality in the bottom 30% of 65% boards under $50.
- Offers tri-mode connectivity: USB-C wired, Bluetooth, and 2.4GHz wireless.
- Includes a 1600mAh battery for cordless operation.
- Features a detachable portable strap for easier transport.
Your choice should be guided by your need for wireless freedom. The Redragon CASTOR K631 Pro is worth the minimal price increase if you want to connect to multiple devices or keep your desk cable-free. If your setup is permanent and you prefer the simplicity of a wired connection, or if you value the included spare switches for modding, the standard CASTOR K631 is the more straightforward option.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Redragon CASTOR K631
Redragon CASTOR K631 Pro
Connection
Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Weight
430 g
470 g
Heavier boards stay planted and lighter ones travel
Released
2023
2026
- Redragon CASTOR K631
- Redragon CASTOR K631 Pro
- Performance
- 7171
- Build quality
- 5756
- Productivity
- 5554
- Customizability
- 6158
- Portability
- 7284
- Layout size: 65%
- Hot-swappable
- Case material: Plastic
- Switch options: Linear
- Mount style: Bottom Mount
- Keycaps: ABS
What will you mostly use it for?
The K631 Pro is the clear choice for mobile and flexible setups, winning in Office, Travel, and Content Creation due to its wireless modes and detachable strap. The standard K631 holds a slight edge for modders because its package includes extra switches. For stationary, cable-tolerant uses like Gaming and Programming, the keyboards are functionally equivalent, making the decision purely about connectivity preference.
It's a tie
- Both feature N-key rollover and dedicated arrow keys for FPS gaming.
- Both are hot-swappable with linear switches, allowing for switch customization.
- Both support software for macro programming and RGB effects.
Redragon CASTOR K631 vs CASTOR K631 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
3 of 17 specs differ
Redragon CASTOR K631
Redragon CASTOR K631 Pro
Switch options
Hot-swappable
Mount style
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Released
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Redragon CASTOR K631 vs CASTOR K631 Pro: your questions
The main difference is connectivity. The K631 is wired-only, while the K631 Pro adds Bluetooth and 2.4GHz wireless modes alongside its USB-C wired connection. The Pro model also includes a 1600mAh battery and a detachable strap.
Yes. Both the Redragon CASTOR K631 and K631 Pro feature hot-swappable sockets. The manufacturer states they are compatible with almost all 3-pin and 5-pin switch types on the market.
For competitive gaming where consistent latency is critical, the wired K631 may be preferred. For general gaming, the K631 Pro offers flexibility with its 2.4GHz wireless mode. Both have N-key rollover and support gaming-oriented software.
No. The standard K631 comes with Outemu red linear switches. The K631 Pro comes with custom Dragon Chant linear switches. Both are linear and quiet, but they are different switch models.
The K631 includes a keyboard, manual, keycap puller, switch puller, USB cable, sticker, and four extra red switches. The K631 Pro includes the keyboard, manual, a combined keycap & switch puller, USB cable, and a sticker.
Yes. Since the K631 Pro has a USB-C wired mode, you can use it while connected via cable, which will also charge its internal 1600mAh battery.
The K631 Pro is more portable due to its wireless functionality and included detachable strap. Both share the same compact 65% form factor, but the Pro's wireless modes make it easier to use away from a desk.
Yes. Both the CASTOR K631 and K631 Pro feature vibrant RGB backlighting with up to 20 preset modes, adjustable brightness, and a music sync mode, according to their vendor descriptions.
Yes. Redragon provides software for both models to design custom RGB lighting effects and program macros, as stated on their product pages.
The manufacturer lists a 1600mAh battery for the K631 Pro but does not provide an estimated battery life in hours. Actual runtime will depend on usage patterns and RGB brightness settings.
Based on the specifications, both use ABS keycaps with an OEM profile. There is no indication of a material or profile difference between the two models.
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