Epomaker EK21 vs RT100 ProNumpad vs Full-Size Keyboard Comparison
Choose the EK21 for a portable numpad accessory, or the RT100 Pro for a complete, feature-rich standalone keyboard.
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4.5 (34)4.5 · 34 reviews
from$33at Epomaker
90-day lowLowest price in 90 days
4.3 (12)4.3 · 12 reviews
from$98at Epomaker
90-day lowLowest price in 90 days
Which one should you get?
Get the
Epomaker EK21
Numpad
Build quality in the top 25% of Numpad boards under $50.
- Extremely portable at 200g with a compact 20-key numpad layout.
- Supports VIA software for open-source, deep programmability.
- Features a flex-cut PCB and plate for a more flexible gasket mount feel.
- Numpad only. This is not a full keyboard.
Get the
Epomaker RT100 Pro
Full-Size Keyboard Comparison
Build quality in the top 45% of 96% boards under $100.
- Comprehensive 96% layout with numpad, arrow keys, and function row.
- Features a 1.54-inch TFT screen that can be swapped for four macro keys.
- Massive 5000mAh battery for extended wireless use.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Your choice is defined by form factor. The Epomaker EK21 is a specialized, highly portable accessory for users who already have a compact main keyboard but need a numpad. The Epomaker RT100 Pro is a complete, feature-packed primary keyboard for users who want a full layout, a customizable screen, and maximum battery life in a stationary setup. Prioritize the EK21 for augmentation and portability, or the RT100 Pro for a standalone daily driver.
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.
Epomaker EK21
Epomaker RT100 Pro
Layout size
Numpad
96%
Battery
1,000 mAh
5,000 mAh
A larger battery means fewer cables during the day
Case material
ABS
ABS, Plastic
Display
None
TFT
A case display rather than a typing feature
Weight
200 g
1,300 g
Heavier boards stay planted and lighter ones travel
- Epomaker EK21
- Epomaker RT100 Pro
- Performance
- 7879
- Build quality
- 7669
- Productivity
- 8883
- Customizability
- 8273
- Portability
- 8854
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- Switch options: Linear, Silent
- Mount style: Gasket Mount
- Knob
What will you mostly use it for?
The RT100 Pro is the clear choice for primary use as a full-sized keyboard, winning in gaming, office, and programming scenarios due to its complete layout, silent switch option, and large battery. The EK21 excels solely in portability for travel and offers deeper firmware customization via VIA. For content creation, the decision splits based on whether you prioritize a compact control surface or a full keyboard for shortcuts.
Pick the Epomaker RT100 Pro
- The RT100 Pro's full 96% layout provides dedicated macro and function keys without layers.
- Its listed 4ms latency in wired mode may offer a responsiveness edge for competitive play.
- The 1.3kg weight provides a stable, anchored base during intense sessions.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Epomaker EK21
34 owner reviews
“Great wireless connectivity, sounds and feels as good as my 200$ custom keyboard. Great buy especially with the discount, would definitely buy again.”
“I have had this thing for years, I have updated to every Json file and firmware file I can find and it has NEVER worked right, Either the Json file or the firmware is jacked up and no one at Epomaker can give me any explanation. This numpad is the reason I…”
Epomaker RT100 Pro
12 owner reviews
“I love my new keyboard. It is as quiet as advertised and I’m very pleased with the overall performance of the keyboard!”
“I have no way through the software to keep the keyboard on for more than a minute. And randomly throughout typing or gaming the keys become unresponsive. Id expect that out of a 20$ keyboard. But this was a 100$ purchase, very dissapointing”
Epomaker EK21 vs RT100 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 24 specs differ
Epomaker EK21
Epomaker RT100 Pro
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
VIA
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.
Epomaker EK21 vs RT100 Pro: your questions
No, the EK21 is strictly a 20-key numeric keypad. It is designed to complement a separate primary keyboard that lacks a number pad, such as a 65% or TKL layout. You will need both devices for a complete typing experience.
Yes. The RT100 Pro includes a detachable USB A-to-C cable, as listed in the box contents. This allows for easier transport and cable replacement if needed.
For firmware and key mapping, the EK21 offers deeper customization through its support for VIA software, an open-source configuration tool. For physical customization, the RT100 Pro has a unique swappable screen module and includes more extra keycaps and switches in the box.
Both keyboards use dye-sublimated PBT keycaps in a Cherry profile, which should offer similar resistance to shine and textured feel. The RT100 Pro's vendor description specifically notes a "velvety matte texture."
The RT100 Pro has a significantly larger 5000mAh battery, designed to power its full layout, RGB, and screen. The EK21 has a 1000mAh battery, which is adequate for its smaller size and function as an accessory.
Yes, especially if configured with the optional Sea Salt Silent V2 switches. The vendor describes these as designed for "late-night and shared space usage" to reduce noise. The keyboard also features a five-layer sound-dampening package.
According to its technical specifications, the EK21 has a 1000Hz polling rate in both wired and 2.4GHz wireless modes. The polling rate drops to 125Hz when using Bluetooth connectivity.
No. The technical specifications for the RT100 Pro list a fixed typing angle of 5.8 degrees. A customer review also noted the lack of adjustable feet.
The EK21 includes a 2-in-1 keycap and switch puller, an extra "Back" keycap, a 1.8m braided USB A-to-C cable, a 2.4GHz wireless dongle, and a multilingual manual.
According to a customer review and the manufacturer's response, the screen will enter sleep mode when the keyboard is inactive in wireless mode to conserve battery. There is no mentioned option to keep it permanently on while wireless.
Yes. Both the Epomaker EK21 and RT100 Pro feature hot-swappable PCBs, allowing you to change mechanical switches without soldering. The EK21 is compatible with 3-pin and 5-pin switches.
Both are listed as compatible with Mac systems. The RT100 Pro includes specific Mac modifier keycaps in the box for easier adaptation. The EK21's VIA software is also cross-platform.
Not sold on either?
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