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Head to head · Prices checked Oct 21, 2026

Weikav Stars21 Programmable Numpad vs Lofree EH121Aluminum Build vs Calculator Function

Choose the Weikav Stars21 for serious customization and a premium build, or the Lofree EH121 for a lighter, more portable unit with a built-in calculator.

Quick verdict

Which one should you get?

Get the

Weikav Stars21 Programmable Numpad

Aluminum Build

If you want

  • CNC aluminum case with anodized or electrophoretic finish for a premium feel.
  • Full programmability via QMK and VIA firmware support.
  • High 1000Hz polling rate in wired and 2.4GHz modes.

And can live with

  • Heavier at 480g, making it less portable.
  • Smaller 800mAh battery compared to the Lofree model.
  • Vendor descriptions indicate it may be sold as a DIY kit, requiring assembly.

Get the

Lofree EH121

Calculator Function

If you want

  • Dual-function design works as both a numpad and a calculator.
  • Lighter weight of 252g and larger 950mAh battery.
  • Pre-built and ready to use out of the box.

And can live with

  • Plastic case construction feels less premium than aluminum.
  • Lacks advanced programmability features like QMK or VIA support.
  • No RGB lighting or specified high polling rate for gaming.

Bottom line

Your decision hinges on what you value in a numpad. If you are a keyboard enthusiast who wants a solid foundation for customization, values a metal build, and needs powerful programmability, the Weikav Stars21 is the clear choice. If you need a straightforward, lightweight accessory for number entry and calculations that works immediately, the Lofree EH121 is the more practical and portable option.

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.

Weikav Stars21 Programmable Numpad

Lofree EH121

  • Battery

    800 mAh

    950 mAh

  • Case material

    Aluminum

    Plastic

  • Weight

    480 g

    252 g

  • QMK

    Yes

    No

  • VIA

    Yes

    No

KeebFinder scores

How we score
  • Weikav Stars21 Programmable Numpad
  • Lofree EH121
Performance
76
45
Build quality
84
59
Productivity
57
60
Customizability
89
50
Portability
78
87

What they share

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

Best for

What will you mostly use it for?

The Weikav Stars21 dominates in scenarios demanding performance and customization, such as gaming, programming, and modding, thanks to its high polling rate, programmability, and aluminum construction. The Lofree EH121 wins for general office use and travel, where its lighter weight, calculator function, and larger battery are more practical. For content creation, the choice depends on whether you value macro keys or an instant calculator more.

For gaming

Pick the Weikav Stars21 Programmable Numpad

  • The Weikav Stars21 has a specified 1000Hz polling rate in wired/2.4GHz modes for lower latency.
  • Its N-Key Rollover (NKRO) support prevents ghosting during complex key presses.
  • The aluminum case may provide a more stable, resonant-free platform.

Full specs

Weikav Stars21 Programmable Numpad vs Lofree EH121 specs

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

11 of 21 specs differ

Weikav Stars21 Programmable Numpad

Lofree EH121

Typing & switches

Switch options

Linear
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
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

Max polling rate

1,000 Hz
—

Battery

800 mAh
950 mAhBetter

USB-C

No
Yes

Build & materials

Case material

Aluminum
Plastic

Keycaps

—
ABS, PC

Weight

480 g
252 g

Dimensions

18 x 130 x 95 mm
39 x 149 x 94 mm

Backlight

RGB
None

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

No
Yes

Extras

Released

2025
2024

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • VelocifireCN

    In stock
    $54Visit
  • AmazonGlobal

    Check price
    ~$54Visit
Lofree EH1212 stores
  • AmazonGlobal

    Check price
    ~$59Visit
  • WhatGeekCN

    Out of stock
    $59Visit

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.

FAQ

Weikav Stars21 Programmable Numpad vs Lofree EH121: your questions

The Weikav Stars21 is better suited for gaming. Its product specifications list a 1000Hz polling rate for wired and 2.4GHz connections, which can offer lower input latency. It also supports N-Key Rollover to ensure all simultaneous key presses are registered correctly.

Only the Weikav Stars21 offers deep key reprogramming. Its vendor description explicitly states support for QMK and VIA, which are powerful, open-source firmware tools for creating custom layers and macros. The Lofree EH121's description does not mention any similar programmability features.

Yes, according to its vendor description. The Lofree EH121 is described as having two functions in one machine, serving as both a numeric keypad and a calculator. It features a ten-digit display and a one-touch switch to change between the two modes.

The Lofree EH121 has a larger capacity battery at 950mAh compared to the Weikav Stars21's 800mAh. While actual battery life depends on usage patterns like backlighting and connection mode, the larger capacity in the lighter Lofree model suggests a potential advantage for wireless endurance.

Yes, both the Weikav Stars21 and Lofree EH121 are listed with hot-swappable PCBs in their specifications. This allows you to easily change the mechanical switches without soldering, offering flexibility in tuning the typing feel.

The Weikav Stars21 is significantly heavier at 480 grams, due to its CNC aluminum case. The Lofree EH121 is much lighter at 252 grams, utilizing a plastic case construction which contributes to its portability.

Yes, both numpads offer tri-mode connectivity. Each supports a wired USB-C connection, a 2.4GHz wireless connection with a dongle, and Bluetooth, providing flexibility to connect to multiple devices.

Only the Weikav Stars21 features RGB lighting. Its vendor description specifies 16 million RGB colors. The Lofree EH121 has a single-color warm white backlight with adjustable brightness levels, but not full RGB.

The vendor description for the Weikav Stars21 lists 'Diy Kit/Barebones' as an extra feature, suggesting it may not come pre-assembled with switches and keycaps. Buyers should verify what is included in their purchase, as it might require sourcing those components separately.

The Lofree EH121 is more travel-friendly. It is less than half the weight of the Weikav Stars21 (252g vs 480g) and has a slimmer profile in one dimension, making it easier to pack. Its plastic case is also likely more resistant to minor travel scuffs than anodized aluminum.

The Weikav Stars21 uses a CNC aluminum case with surface treatments like anodizing and sandblasting, which typically offers a more premium and durable feel. The Lofree EH121 uses a plastic (PC) case, which keeps it light and cost-effective but may feel less substantial.

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