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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Which one should you get?
Get the
Lofree EH121
Calculator
Build quality in the bottom 40% of Numpad boards under $100.
- 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.
- Fully programmable RGB lighting with custom software support.
- Larger 1500mAh battery for extended wireless use.
- Comes with durable PBT dye-sublimation keycaps.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
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.
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
- Lofree EH121
- Yunzii YZ21
- Performance
- 4573
- Build quality
- 5853
- Productivity
- 6059
- Customizability
- 5069
- Portability
- 8786
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
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.
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.
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
Switch options
Hot-swappable
Mount style
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
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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