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Head to head · Prices checked Nov 10, 2026

Redragon FIZZ K617 vs K721Budget 60% vs Gaming 75%

Choose the K617 for extreme portability on a tight budget, or the K721 for competitive gaming features and a more complete layout.

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Quick verdict

Which one should you get?

Get the

Redragon FIZZ K617

Budget 60%

Build quality in the top 50% of 60% boards under $50.

If you want

  • Extremely compact 60% layout saves substantial desk space.
  • Lower cost, making it a very budget-friendly entry point.
  • Hot-swappable socket compatible with both 3-pin and 5-pin switches.

Rules this board out

  • Compact layout only. No function row, dedicated arrow keys, or numpad.

Get the

Redragon K721

Gaming 75%

Build quality in the bottom 40% of 75% boards under $100.

If you want

  • Features Hall effect magnetic switches with adjustable actuation points (0.01mm to 3.5mm).
  • High 8000Hz polling rate for minimal input latency.
  • Includes Rapid Trigger mode for competitive gaming.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
  • No numpad.

Bottom line

Your primary need dictates the choice. If your budget is strict and desk space is minimal, the Redragon FIZZ K617 delivers core hot-swap functionality in a tiny package. If you are a serious gamer or need a more versatile layout for work, the Redragon K721 justifies its higher cost with magnetic switches, a high polling rate, and a more practical 75% form factor.

What actually differs

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 FIZZ K617

Redragon K721

  • Layout size

    60%

    75%

  • Hall effect (magnetic)

    No

    Yes

    Adjustable actuation helps in games and not in normal typing

  • Rapid trigger

    No

    Yes

    Faster resets help in games and not in normal typing

  • Max polling rate

    1,000 Hz

    8,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Switch options

    Clicky, Linear

    Linear, Magnetic

KeebFinder scores

How we score
  • Redragon FIZZ K617
  • Redragon K721
Performance
70
98
Build quality
61
58
Productivity
53
52
Customizability
67
55
Portability
70
58

What they share

  • Connection: Wired
  • Hot-swappable
See every spec side by side

Best for

What will you mostly use it for?

The K721 is the clear choice for gaming, office work, and programming due to its more functional layout and advanced gaming features. The FIZZ K617 wins for travel and portability thanks to its diminutive 60% size and lighter weight. For modding, both offer hot-swap capability, making them equally viable starting points for customization.

For gaming

Pick the Redragon K721

  • The K721 lists an 8000Hz polling rate for faster response.
  • It features Hall effect magnetic switches with adjustable actuation points.
  • It includes a dedicated Rapid Trigger mode for repeated keystrokes.

Full specs

Redragon FIZZ K617 vs K721 specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

12 of 18 specs differ

Redragon FIZZ K617

Redragon K721

Typing & switches

Switch options

Clicky, Linear
Linear, Magnetic

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

Bottom Mount
Gasket Mount

Layout

Layout size

60%
75%

Layout standard

ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-UK, JIS
ANSI

Ergonomics

Standard
Standard

Display

LED
None

Connectivity & battery

Connection

Wired
Wired

Max polling rate

1,000 Hz
8,000 HzBetter

USB-C

Yes
No

Build & materials

Case material

Plastic
—

Weight

590 g
803 g

Dimensions

38 x 99 x 36 mm
43 x 335 x 140 mm

Backlight

RGB
RGB

Firmware & software

N-key rollover

Yes
Yes

Extras

Released

2021
2025

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Redragon FIZZ K617

  • Redragon

    ISO-UK

    In stockShips to you

  • Redragon

    ISO-FR

    In stockShips to you

Redragon K721

No ISO layout at the stores we track.

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

FAQ

Redragon FIZZ K617 vs K721: your questions

The Redragon K721 is designed for competitive FPS gaming. Its product listing highlights an 8000Hz polling rate, Rapid Trigger mode, and adjustable Hall effect magnetic switches, which allow for fine-tuning actuation points for faster keystrokes.

No, the FIZZ K617 uses a 60% layout, which does not include dedicated arrow keys. These functions are typically accessed through a function layer combined with other keys.

Yes, both keyboards are hot-swappable. The K617 supports 3-pin and 5-pin mechanical switches. The K721 uses hot-swappable Hall effect magnetic switches, which are a different type of switch technology.

According to the vendor description, the K721's magnetic switches offer adjustable actuation points from 0.01mm to 3.5mm. This allows you to customize how far a key must be pressed to register, which can optimize for speed or prevent accidental presses.

The Redragon FIZZ K617 is significantly more portable. It is a 60% keyboard measuring 99mm wide and weighing 590g, compared to the K721's 75% layout at 335mm wide and 803g.

The Redragon FIZZ K617 listing mentions 'Pro Software Customizable' for creating macros and lighting effects. The K721 description details onboard RGB customization but does not explicitly mention companion software for key remapping.

A gasket mount involves suspending the keyboard plate with rubber or silicone gaskets to dampen sound and provide a softer typing feel. The Redragon K721 uses a gasket-mounted design, while the FIZZ K617 uses a standard bottom mount.

The Redragon K721 vendor page lists compatibility with Windows XP through 11. The FIZZ K617 does not specify operating system compatibility. Both are standard USB HID devices and may work, but dedicated software and full functionality are not guaranteed on non-Windows systems.

Rapid Trigger is a feature that allows a key to be re-pressed without returning to its full resting position. The K721 listing states this enables faster repeated keystrokes, which is beneficial in high-frequency gaming scenarios.

The Redragon K721 is generally better for office work due to its 75% layout, which includes arrow keys and navigation keys without a full-size footprint. Its gasket mount and adjustable switches may also contribute to a more comfortable typing experience.

The FIZZ K617 includes the keyboard, a detachable USB Type-C cable, and a user manual. The K721 includes the keyboard and a user manual. The K721 listing does not specify if a cable is included, though it is a wired keyboard.

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