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SPHINX K503 (French Layout Only)

Redragon SPHINX K503 Mechanical Keyboard

The Redragon SPHINX K503 French Only is a membrane keyboard designed for users who want a mechanical-like typing feel without the cost of true mechanical switches. It suits gamers and office workers seeking quiet, responsive keys with customizable RGB lighting and ergonomic comfort. This keyboard supports French layout users and is compatible with various Windows versions.</p... Read more
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SPHINX K503 (French Layout Only)

Redragon
Redragon
Ships to US
$30
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Compare Redragon SPHINX K503 vs Redragon FIZZ K617 vs Keychron B6 Pro Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Redragon SPHINX K503Redragon FIZZ K617Keychron B6 Pro
SPHINX K503 (French Layout Only)
FIZZ K617 60% Wired Mechanical Keyboard (Red Inner)
Keychron B6 Pro Ultra-Slim Wireless Keyboard ISO Layout Collection
0.0 (0)
0.0 (0)
4.8 (24)
  • Released in 2025
  • Built with the ISO-FR, ISO layout standard
  • Weighs about 1000 g
  • Sized at 440 x 180 x 40 mm
  • Released in 2021
  • Has Linear, Clicky switch options
  • Supports hot-swappable switches
  • Available in a 60% layout
  • Built with the ANSI, ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO layout standard
  • Uses a Bottom Mount mounting style
  • Weighs about 590 g
  • Sized at 38 x 99 x 36 mm
  • Made with a Plastic case
  • Released in 2024
  • Has Linear, Tactile, Clicky switch options
  • Features a low-profile design
  • Built with the ISO, JIS, ANSI layout standard
  • Compatible with both Mac and Windows
  • Provides dedicated media keys
  • Uses a Plate Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 1000 Hz polling rate
  • Equipped with a 1200 mAh battery
  • Weighs about 623 g
  • Sized at 5 x 429 x 130 mm
  • Made with a Plastic, ABS case
  • Features ABS keycaps
  • Offers Yes, North-face RGB lighting
Scores
  • Performance: 74.8
  • Build Quality: 43.1
  • Productivity: 50.1
  • Customizability: 46.9
  • Portability: 40.2
Scores
  • Performance: 69.6
  • Build Quality: 55.5
  • Productivity: 53.1
  • Customizability: 57.3
  • Portability: 70.1
Scores
  • Performance: 52.3
  • Build Quality: 45.9
  • Productivity: 67.1
  • Customizability: 52.6
  • Portability: 51.1
Name
Redragon SPHINX K503
Name
Redragon FIZZ K617
Name
Keychron B6 Pro
Release year
2025
Release year
2021
Release year
2024
Switch Options
-
Switch Options
Linear, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
60%
Layout Size
100%
Layout Standard
ISO-FR, ISO
Layout Standard
ANSI, ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO
Layout Standard
ISO, JIS, ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
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
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
-
Polling Rate
1000 Hz
Battery capacity
-
Battery capacity
-
Battery capacity
1200 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
-
Mount Style
Bottom Mount
Mount Style
Plate Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb
Backlight
 
North-face
Case Colors
Case Colors
Case Colors
Case Material
-
Case Material
Plastic
Case Material
Plastic, ABS
Keycaps Material
-
Keycaps Material
-
Keycaps Material
ABS
Dimensions
440 x 180 x 40 mm
Dimensions
38 x 99 x 36 mm
Dimensions
5 x 429 x 130 mm
Weight
1000g
Weight
590g
Weight
623g
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Product Description

The Redragon SPHINX K503 French Only is a membrane keyboard designed for users who want a mechanical-like typing feel without the cost of true mechanical switches. It suits gamers and office workers seeking quiet, responsive keys with customizable RGB lighting and ergonomic comfort. This keyboard supports French layout users and is compatible with various Windows versions.

Key Features

  • Membrane keys with mechanical feel provide a balance between quiet typing and tactile feedback, reducing noise while maintaining responsiveness.
  • RGB backlighting with 6 customizable modes allows users to personalize lighting effects for different environments or moods.
  • Anti-ghosting with 25-key rollover ensures accurate input during fast or complex key combinations, useful for gaming and productivity.
  • Dedicated multimedia keys and additional FN+ shortcuts offer quick access to media controls, enhancing convenience during work or entertainment.

Typing Experience and Ergonomics

  • Integrated wrist rest supports hand positioning, helping reduce fatigue during extended typing or gaming sessions.
  • Keys are designed to be quiet and tactile, making the keyboard suitable for shared or quiet environments.

Build and Connectivity

  • USB connection with gold-plated connector improves corrosion resistance and maintains stable data transmission over time.
  • Durable construction supports long-term use, though specific materials and mounting style are not detailed.

Compatibility

  • Supports French layout exclusively, which may limit use for those needing other language layouts or full international compatibility.
  • Compatible with Windows XP through Windows 10, covering a wide range of PC systems without additional drivers.

Trade-offs

  • Membrane switches offer less precise feedback and shorter lifespan compared to mechanical switches, which may affect heavy typists or gamers seeking high durability.
  • Limited to wired USB connectivity, so no wireless option is available.
  • RGB lighting customization is limited to preset modes without software-based programming or per-key lighting.

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