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Head to head · Prices checked Nov 7, 2026

Lofree EH121 vs Yunzii YZ21Calculator vs RGB Choice

Choose the Lofree EH121 for its unique calculator function, or the Yunzii YZ21 for its customizable RGB lighting and lower price.

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Quick verdict

Which one should you get?

Get the

Lofree EH121

Calculator

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

If you want

  • Unique dual function as a numeric keypad and a calculator.
  • Lighter weight of 252g for better portability.
  • Gasket mount structure for a softer, more flexible typing feel.

Get the

Yunzii YZ21

RGB Choice

Build quality in the bottom 40% of Numpad boards under $50.

If you want

  • Fully programmable RGB lighting with custom software support.
  • Larger 1500mAh battery for extended wireless use.
  • Comes with durable PBT dye-sublimation keycaps.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

Bottom line

Your primary need dictates the choice. If a built-in calculator and a lighter, more portable device are your priorities, the Lofree EH121 is the better option. If you value visual customization, longer battery life, and deeper software control for macros and lighting, the Yunzii YZ21 is the stronger pick, often at a lower price point.

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.

Lofree EH121

Yunzii YZ21

  • Battery

    950 mAh

    1,500 mAh

    A larger battery means fewer cables during the day

  • Keycaps

    ABS, PC

    PBT

  • Backlight

    None

    RGB, north-facing

    RGB for looks and low light rather than speed

  • N-key rollover

    No

    Yes

  • Released

    2024

    2022

KeebFinder scores

How we score
  • Lofree EH121
  • Yunzii YZ21
Performance
45
73
Build quality
58
53
Productivity
60
59
Customizability
50
69
Portability
87
86

What they share

  • Layout size: Numpad
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
See every spec side by side

Best for

What will you mostly use it for?

The Lofree EH121 is the clear choice for office and travel, thanks to its calculator function and lighter weight. The Yunzii YZ21 wins for gaming, modding, and content creation, leveraging its RGB software, macro support, and PBT keycaps. For programming, both are equally viable, leaving the choice to secondary features like battery life or typing feel.

For gaming

Pick the Yunzii YZ21

  • The Yunzii YZ21 listing explicitly mentions N-Key Rollover for anti-ghosting.
  • It offers programmable macro functionality via custom software, according to the vendor description.
  • The Lofree EH121 vendor page does not mention N-Key Rollover or macro support for gaming.

Full specs

Lofree EH121 vs Yunzii YZ21 specs

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

6 of 18 specs differ

Lofree EH121

Yunzii YZ21

Typing & switches

Switch options

—
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Battery

950 mAh
1,500 mAhBetter

USB-C

Yes
No

Build & materials

Case material

Plastic
—

Keycaps

ABS, PC
PBT

Weight

252 g
—

Dimensions

39 x 149 x 94 mm
—

Backlight

None
RGB, north-facing

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2022

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.

Lofree EH1212 stores
Yunzii YZ212 stores

FAQ

Lofree EH121 vs Yunzii YZ21: your questions

The Lofree EH121 numpad has a built-in calculator function. The vendor description states it can switch between being a numeric keypad and a calculator with one touch. The Yunzii YZ21 does not offer this feature.

Yes, the Yunzii YZ21 has fully programmable RGB lighting. According to the manufacturer, it features north-facing RGB LEDs with 16.8 million color combinations and customizable effects through software. The Lofree EH121 has a single-color warm white backlight with adjustable brightness levels.

Yes, both the Lofree EH121 and the Yunzii YZ21 are hot-swappable. This means you can change the mechanical switches without soldering. The Yunzii listing specifies compatibility with 3-pin and 5-pin hot-swap switches.

The Yunzii YZ21 has a larger 1500mAh battery, which should theoretically offer longer wireless use between charges compared to the Lofree EH121's 950mAh battery. Actual battery life will depend on usage patterns and lighting settings.

The Yunzii YZ21 uses PBT dye-sublimation keycaps, which are known for durability and resistance to shine. The Lofree EH121 uses keycaps made from a blend of ABS and PC (polycarbonate) materials.

Yes, both product listings explicitly state Mac and Windows support. They should be compatible with macOS systems, though specific key legends or software functionality may vary.

The Lofree EH121 explicitly includes a 2.4GHz receiver in its package contents. The Yunzii YZ21 product description confirms 2.4GHz wireless connectivity but does not explicitly list the receiver in the contents, so it's advisable to check with the seller.

The Yunzii YZ21 may have an edge for fast inputs. Its listing specifically mentions N-Key Rollover (NKRO) to prevent ghosting, and it offers macro programmability. The Lofree vendor page does not highlight these features for gaming or rapid data entry.

The Lofree EH121 uses a gasket mount structure. According to the manufacturer, this design makes the typing experience softer and more flexible by isolating the plate from the case with cushioning materials, which can reduce typing fatigue.

The Lofree EH121 is likely more portable due to its confirmed lighter weight of 252 grams. The Yunzii YZ21 does not have a specified weight in the provided information, which often indicates a heavier build.

Yes, to fully utilize the RGB lighting effects and macro programming on the Yunzii YZ21, you need to use the custom software mentioned in its product description. The Lofree EH121 does not require software for its single-color backlight adjustment.

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