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Compare Redragon EISA K686 Pro vs PENUMBRA K687 Pro Differences Side by Side

This comparison is for buyers deciding between two feature-rich, tri-mode Redragon keyboards. The choice is difficult because both offer gasket mounts, hot-swap sockets, and multi-device connectivity, but they diverge on core priorities. The EISA K686 Pro provides a nearly full-size 98-key layout, while the Penumbra K687 Pro trades key count for a CNC aluminum case and a more compact 75% design. Your decision hinges on whether you value a dedicated numpad and function row or a denser, more premium construction.

71
EISA K686 PRO
70
PENUMBRA K687 PRO (CNC Aluminum Gaming Keyboard)

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  • Available in a 90% layout
  • Compatible with both Mac and Windows
  • Weighs about 1060 g
  • Sized at 90 x 430 x 90 mm
  • Made with a Plastic case
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Available in a 75% layout
  • Features N-key rollover
  • Weighs about 1800 g
  • Sized at 43 x 132 x 43 mm
  • Made with a Aluminum case
  • Offers Yes, Rgb RGB lighting
Scores
  • Performance: 65.4
  • Build Quality: 63.2
  • Productivity: 82.9
  • Customizability: 66.9
  • Portability: 51.7
Scores
  • Performance: 79.5
  • Build Quality: 72.9
  • Productivity: 71.2
  • Customizability: 61.9
  • Portability: 74.8
Name
Redragon EISA K686 Pro
Name
Redragon PENUMBRA K687 Pro
Release year
2024
Release year
2024
Switch Options
Linear
Switch Options
Linear
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
90%
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
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
-
Battery capacity
-
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
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb
Case Colors
Case Colors
Case Material
Plastic
Case Material
Aluminum
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
90 x 430 x 90 mm
Dimensions
43 x 132 x 43 mm
Weight
1060g
Weight
1800g
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Pros and Trade-offs

Your primary need dictates the choice. If you require a numpad for data entry or prefer a more complete layout without layers, the Redragon EISA K686 Pro is the logical pick. If you prioritize a premium, dense typing feel, want to maximize mouse space, and prefer a compact keyboard with an aluminum chassis, the Redragon Penumbra K687 Pro is the better investment. Both are competent tri-mode boards with gasket mounts and hot-swap sockets.

Redragon EISA K686 Pro

  • +98-key compact layout retains numpad and navigation cluster.
  • +Includes a keycap & switch puller and four spare switches in the box.
  • +Vendor description confirms dedicated Mac/Windows system toggle switch.
  • +South-facing RGB LEDs reduce interference with Cherry-profile keycaps.
  • +Lighter weight (1060g) may be preferable for some users.
  • −Plastic case construction lacks the premium feel of aluminum.
  • −Larger footprint (90 x 430 x 90 mm) consumes more desk space.
  • −Vendor package does not list a keycap puller for the Penumbra, but it is included for the EISA.

Redragon PENUMBRA K687 Pro

  • +CNC aluminum case offers a premium, tank-solid build quality.
  • +More compact 75% layout (81 keys) maximizes desk space.
  • +Features five-layer noise dampening with PO foam, IXPE foam, PET pad, socket foam, and silicone.
  • +Product listing specifies N-Key Rollover for gaming.
  • +Heavier 1800g weight provides excellent desk stability.
  • −Lacks a dedicated numpad, requiring use of a function layer for number entry.
  • −The product package does not include a switch puller.
  • −More compact layout means fewer dedicated keys, relying more on function layers.

Which Keyboard Is Better for Your Needs?

The EISA K686 Pro is the clear choice for office work and content creation where a numpad and dedicated keys are valuable. The Penumbra K687 Pro wins for gaming and travel, prioritizing mouse space and portability with its compact, aluminum design. For programming and modding, the decision is more nuanced, leaning on the EISA's included accessories and full layout versus the Penumbra's premium materials and smaller footprint.

GamingRedragon PENUMBRA K687 Pro
  • •The Penumbra K687 Pro's 75% layout frees up more desk space for mouse movement.
  • •Its listing explicitly mentions N-Key Rollover for simultaneous key presses.
  • •The heavier aluminum build at 1800g provides more stability during intense use.
OfficeRedragon EISA K686 Pro
  • •The EISA K686 Pro's 98-key layout includes a numpad for data entry.
  • •Its vendor description highlights a dedicated Mac/Win toggle switch for multi-OS environments.
  • •The larger layout retains dedicated navigation keys for spreadsheet work.
ProgrammingTie
  • •Both keyboards are hot-swappable for customizing switch feel.
  • •Both include a control knob for quick media and brightness adjustments.
  • •The EISA has more dedicated keys, while the Penumbra's compact size saves desk space for notes.
TravelRedragon PENUMBRA K687 Pro
  • •The Penumbra K687 Pro is significantly more compact (43 x 132 x 43 mm vs 90 x 430 x 90 mm).
  • •It is heavier, but its smaller footprint is easier to pack.
  • •Both offer tri-mode wireless connectivity for use without a cable.
ModdingRedragon EISA K686 Pro
  • •The EISA K686 Pro's vendor description states its hot-swap socket is compatible with nearly all 3-pin and 5-pin switches.
  • •Its package includes a keycap & switch puller and four spare switches.
  • •The plastic case may be easier for beginners to open and modify compared to an aluminum chassis.
Content CreationRedragon EISA K686 Pro
  • •The EISA K686 Pro's dedicated knob offers direct control over volume and playback, useful for video/audio editing.
  • •The full 98-key layout provides more shortcuts without relying on function layers.
  • •Software support for macros, mentioned for both, can streamline editing workflows.

Frequently Asked Questions (FAQ)

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