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Compare Redragon Caraxes K644 Pro SE vs PENUMBRA K687 Differences Side by Side

This comparison is for buyers deciding between two distinct Redragon keyboards at a similar price point. The Caraxes K644 Pro SE offers tri-mode wireless connectivity in a compact 65% form factor, while the Penumbra K687 provides a more substantial 75% layout with a CNC aluminum case and gasket mount. The decision hinges on whether you prioritize wireless freedom and a smaller footprint or a heavier, more acoustically tuned board with dedicated function keys and a control knob.

CARAXES PRO K644 SE
70
PENUMBRA K687 (CNC Aluminum Gaming Keyboard)

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  • Released in 2023
  • Available in a 65% layout
  • Uses a Bottom Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 1600 mAh battery
  • Weighs about 600 g
  • Sized at 36 x 112 x 323 mm
  • Made with a Plastic case
  • Released in 2025
  • Has Linear switch options
  • Available in a 75% layout
  • Comes with a knob
  • Has built-in sound dampening
  • Uses a Gasket Mount mounting style
  • Supports Wired, Wired only connectivity
  • Weighs about 1500 g
  • Sized at 43 x 133 x 43 mm
  • Made with a Aluminum case
Scores
  • Performance: 70.4
  • Build Quality: 50.5
  • Productivity: 49.3
  • Customizability: 55.6
  • Portability: 83.2
Scores
  • Performance: 79.5
  • Build Quality: 72.9
  • Productivity: 71.3
  • Customizability: 62
  • Portability: 60.1
Name
Redragon Caraxes K644 Pro SE
Name
Redragon PENUMBRA K687
Release year
2023
Release year
2025
Switch Options
-
Switch Options
Linear
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
65%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Wired, Wired only
Polling Rate
-
Polling Rate
-
Battery capacity
1600 mAh
Battery capacity
-
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Bottom Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb
Case Colors
Case Colors
Case Material
Plastic
Case Material
Aluminum
Keycaps Material
-
Keycaps Material
-
Dimensions
36 x 112 x 323 mm
Dimensions
43 x 133 x 43 mm
Weight
600g
Weight
1500g
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Pros and Trade-offs

Your choice boils down to a core trade-off: connectivity versus construction. If you need a keyboard to move around, use wirelessly with multiple devices, or save desk space, the Caraxes K644 Pro SE is the clear pick. If your keyboard stays on one desk and you value a premium, acoustically tuned typing feel with a more practical layout, the Penumbra K687 offers significantly more for a slightly higher cost. Prioritize your daily use case over specs alone.

Redragon Caraxes K644 Pro SE

  • +Offers tri-mode connectivity (Bluetooth, 2.4GHz, wired) for maximum flexibility.
  • +Very portable at 600g with a compact 65% (323mm) footprint.
  • +Includes a 1600mAh battery for wireless operation.
  • +Comes with a switch puller, keycap puller, and spare switches in the box.
  • +Features 1.2x larger keycaps, which Redragon states are designed for larger hands.
  • −Uses a plastic case and bottom mount, which may feel less premium.
  • −Lacks dedicated function keys and arrow cluster, requiring use of a function layer.
  • −Some user reviews mention the 2.4GHz wireless connection can be finicky without direct line of sight.

Redragon PENUMBRA K687

  • +Constructed with a premium CNC aluminum case for a solid, tank-like feel.
  • +Utilizes a gasket mount design with five layers of noise-dampening foam for a softer, quieter typing experience.
  • +75% layout with 81 keys provides dedicated arrow keys, function row, and a control knob without a large footprint.
  • +Includes a dedicated control knob for media and backlight adjustment.
  • +Comes with thick-lubed Dragon Chant linear switches pre-installed.
  • −Wired-only connectivity limits placement and desk cleanliness.
  • −Heavy at 1500g and less portable due to its size and weight.
  • −The package includes fewer accessories (no switch or keycap pullers are listed).

Which Keyboard Is Better for Your Needs?

The Penumbra K687 is the more capable board for stationary, productivity-focused tasks like office work, programming, and gaming, thanks to its superior layout and build. The Caraxes K644 wins decisively for travel and any scenario where wireless operation or a lighter weight is critical. For modding, the Penumbra's gasket mount and extensive pre-installed foam give it an edge, while content creators will value different features from each board.

GamingRedragon PENUMBRA K687
  • •The Penumbra K687's gasket mount and five-layer noise dampening (PO foam, IXPE foam, PET pad, socket foam, silicone pad) can provide a more consistent, cushioned feel during long sessions.
  • •Its 75% layout retains the F-row for gaming shortcuts without requiring a function layer.
  • •The dedicated control knob allows for quick media or volume adjustments without leaving a game.
OfficeRedragon PENUMBRA K687
  • •The Penumbra K687's 81-key 75% layout includes dedicated function keys and arrow keys, reducing reliance on layers for common office shortcuts.
  • •Its listed five-layer noise dampening and thick-lubed Dragon Chant switches are described as creating a quieter, dampened acoustic, which is beneficial in shared spaces.
  • •The dedicated control knob provides easy access to volume and media playback controls.
ProgrammingRedragon PENUMBRA K687
  • •The Penumbra K687's 75% layout provides dedicated arrow keys and a full F-row, which are frequently used in IDEs and code editors.
  • •The aluminum case and gasket mount may offer a more stable and consistent typing feel for long coding sessions.
  • •The inclusion of a control knob can be mapped to useful functions like scrolling or adjusting IDE settings if the software allows.
TravelRedragon Caraxes K644 Pro SE
  • •The Caraxes K644 is significantly lighter at 600g compared to the Penumbra's 1500g.
  • •It offers Bluetooth and 2.4 GHz wireless connectivity, eliminating the need to carry or connect a cable.
  • •Its 65% layout (323mm length) is more compact than the 75% Penumbra K687.
ModdingRedragon PENUMBRA K687
  • •The Penumbra K687 features a gasket mount design, which is often preferred for its typing feel and is a more modern mounting style than the Caraxes's bottom mount.
  • •It comes pre-installed with multiple layers of sound-dampening foam (PO, IXPE, PET, socket, silicone), providing a strong foundation for acoustic tuning.
  • •Both boards are hot-swappable, but the Penumbra's aluminum case offers a more premium base for modifications.
Content CreationTie
  • •The Penumbra K687's dedicated control knob is excellent for scrubbing timelines or adjusting brush sizes in creative software.
  • •The Caraxes K644's wireless connectivity allows for a cleaner desk setup and easier positioning for ergonomics during long editing sessions.
  • •Both keyboards feature per-key RGB backlighting, which can be useful for identifying custom keybinds in dimly lit environments.

Frequently Asked Questions (FAQ)

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