Not sure which keyboard to choose? Try the Keyboard Finder now!
72
PENUMBRA K687 (CNC Aluminum Gaming Keyboard)

Redragon PENUMBRA K687

The Redragon PENUMBRA K687 is a compact mechanical keyboard designed for users who want a balance between desk space efficiency and functional key access. It suits typists and gamers seeking a quieter, cushioned typing experience with dedicated function keys without relying on complex key combinations. Its design targets those who prefer a solid build and noise reduction in a smaller footprint.</p... Read more
Compare prices from $69.00
Details
Specification
Price alert

Compare prices and purchase options

Click the coupon code for a discount. Features and specs may vary by model version.

PENUMBRA K687 (CNC Aluminum Gaming Keyboard)

Redragon PENUMBRA K687 - PENUMBRA K687 (CNC Aluminum Gaming Keyboard)
Redragon
Ships to US
$69
Copy
*I may earn a commission if you purchase through these links. Thanks for your support!

Price history

The price history chart tracks the lowest price over time across all stores, excluding Amazon (shipping costs not included).

Similar 75% keyboards

Same price range, layout, and form factor, from different brands.
83
$69
Ducky OK-M 75 75% Hotswap Wireless RGB Keyboard
Ducky OK M
75%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
VIA,
Gasket Mount

Compare specs
-29% off
82
$85$60
EPOMAKER RT82
Epomaker RT82
75%,
Hotswap,
Wireless,
Screen,
RGB,
VIA,
Gasket Mount

Compare specs
-15% off
81
$79$67
EPOMAKER x AULA EA75 Max
AULA EA75 Max
75%,
Hotswap,
Wireless,
Screen,
RGB,
Knob,
Gasket Mount

Compare specs
81
$59
Keychron Q1 QMK Custom Mechanical Keyboard - Version 2
Keychron Q1 V2
75%,
Hotswap,
Wired,
RGB,
Knob,
VIA,
QMK,
Alu case,
Gasket Mount

Compare specs
80
$65
Leobog Hi75C Pro Keyboard Kit
Leobog Hi75C Pro
75%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
Alu case,
Gasket Mount

Compare specs
75
$59
SKYLOONG GK75 Rainbow Mechanical Knob Keyboard
Skyloong GK75
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Knob,
Alu case,
Gasket Mount

Compare specs
72
$79
YUNZII RT75 PRO Dual-8K Rapid Trigger Wireless Gaming Magnetic Keyboard
Yunzii RT Pro HE
75%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
HE,
Rapid trigger,
Top Mount

Compare specs
72
$79
GamaKay TK75 SOCD 75% Silent Mechanical Keyboard with SnapTap
Gamakay TK75 V2
75%,
Hotswap,
Wireless,
Screen,
RGB,
Knob,
Gasket Mount

Compare specs

Compare Redragon PENUMBRA K687 vs Ducky OK M vs Epomaker RT82 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Redragon PENUMBRA K687Ducky OK MEpomaker RT82
72
PENUMBRA K687 (CNC Aluminum Gaming Keyboard)
83
Ducky OK-M 75 75% Hotswap Wireless RGB Keyboard
-29% off
82
EPOMAKER RT82
0.0 (0)
0.0 (0)
4.6 (41)
  • Has Linear switch options
  • Supports Wired, Wired only connectivity
  • Weighs about 1500 g
  • Sized at 43 x 133 x 43 mm
  • Made with a Aluminum case
  • Offers Yes, Rgb RGB lighting
  • Released in 2026
  • Has Clicky, Linear switch options
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
  • Has Linear, Silent switch options
  • Includes a Yes, LCD display
  • Equipped with a 4000 mAh battery
  • Weighs about 1000 g
  • Sized at 40 x 327 x 143 mm
  • Made with a ABS case
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Scores
  • Performance: 78.9
  • Build Quality: 72.6
  • Productivity: 70.7
  • Customizability: 60.7
  • Portability: 60
Scores
  • Performance: 69
  • Build Quality: 72.2
  • Productivity: 88.9
  • Customizability: 77.9
  • Portability: 77
Scores
  • Performance: 77.7
  • Build Quality: 73.7
  • Productivity: 81.9
  • Customizability: 77.5
  • Portability: 78.7
Name
Redragon PENUMBRA K687
Name
Ducky OK M
Name
Epomaker RT82
Release year
2025
Release year
2026
Release year
2025
Switch Options
Linear
Switch Options
Clicky, Linear
Switch Options
Linear, Silent
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
LCD
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
-
Battery capacity
-
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, North-face
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Colors
Case Material
Aluminum
Case Material
-
Case Material
ABS
Keycaps Material
-
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
43 x 133 x 43 mm
Dimensions
-
Dimensions
40 x 327 x 143 mm
Weight
1500g
Weight
-
Weight
1000g
*Something incorrect or missing? Please
let me know
!

Product Description

The Redragon PENUMBRA K687 is a compact mechanical keyboard designed for users who want a balance between desk space efficiency and functional key access. It suits typists and gamers seeking a quieter, cushioned typing experience with dedicated function keys without relying on complex key combinations. Its design targets those who prefer a solid build and noise reduction in a smaller footprint.

Key Features

  • 81-key layout keeps the compact size of a 65% keyboard while adding a dedicated top row for function keys, removing the need for FN combos and improving convenience.
  • One-knob control allows quick adjustment of backlight brightness and media functions, reducing the need for extra keys or shortcuts.
  • Software support enables customization of lighting modes, macros, and key remapping to tailor the keyboard for work or gaming.

Build Quality

  • Constructed with a CNC aluminum frame, providing a sturdy and stable base that resists flex during use.
  • Gasket-mounted design uses precision-locked covers with silicone gaskets, which add flexibility and reduce rigid noise for a softer typing feel.
  • Multiple layers of foam and silicone pads reduce hollow sounds and vibrations, contributing to quieter keystrokes.

Typing Experience

  • Equipped with custom thick-lubed linear switches offering smooth, cushioned key travel with a creamy feel, suited for users who prefer quiet, consistent keystrokes.
  • Noise dampening materials significantly reduce typing noise, making it suitable for shared or quiet environments.

Trade-offs

  • Compact layout omits a numpad, which may be less ideal for users who frequently input numbers.
  • Wired connectivity only, limiting flexibility for users who prefer wireless setups.
  • Custom switches may not be hot-swappable, restricting switch replacement or upgrades.

Frequently Asked Questions (FAQ)

Other users are also interested in these products

Discover products that are frequently liked and visited by other users!
-15% off
82
$0.26$0.22
EPOMAKER Lilac Silent Tactile  Set
Epomaker Lilac Silent Tactile
Tactile,
Silent,
Factory lubed,
5-Pin,
PC bottom,
PC top,
POM stem