Compare Epomaker TH33 vs Yunzii YZ21 Numpad Differences Side by Side

This comparison is for users seeking a wireless mechanical numpad to complement a compact keyboard setup. The decision is challenging because both the Epomaker TH33 and Yunzii YZ21 offer tri-mode connectivity and hot-swappable switches at a similar price point. The key differences lie in their programmability, key count, and internal design, which cater to distinct user priorities.

Model
	82	66	Select a keyboard to compare
Rating	5.0 stars (4 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2025 Has Linear switch options Comes with a knob Supports VIA configuration Features N-key rollover Has built-in sound dampening Uses a Gasket Mount mounting style Runs at a 1000 Hz polling rate Equipped with a 2000 mAh battery Weighs about 380 g Sized at 45 x 151 x 141 mm Made with a ABS case Offers Yes, Rgb, South-face, Rgb South-face RGB lighting	Released in 2024 Has Clicky, Tactile, Linear switch options Provides dedicated media keys Uses a Plate Mount mounting style Equipped with a 1500 mAh battery Made with a Plastic case Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Score	Scores Performance: 78.1 Build Quality: 76.7 Productivity: 87.4 Customizability: 82.7 Portability: 90	Scores Performance: 57.9 Build Quality: 57.3 Productivity: 69.9 Customizability: 76.7 Portability: 88.8
Name	Name Epomaker TH33	Name Yunzii YZ21 Numpad
Release year	Release year 2025	Release year 2024
Switch Options	Switch Options Linear	Switch Options Clicky, Tactile, Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size Numpad	Layout Size Numpad
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate -
Battery capacity	Battery capacity 2000 mAh	Battery capacity 1500 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style Plate Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, South-face	Backlight Rgb, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS	Case Material Plastic
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 45 x 151 x 141 mm	Dimensions -
Weight	Weight 380g	Weight -

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Pros and Trade-offs

For most users, the Epomaker TH33 is the recommended choice. Its superior programmability, additional keys, and gasket-mounted design provide significantly more value and versatility for a similar price. Only consider the Yunzii YZ21 if you strictly need a basic, no-frills wireless numpad and find it available at a notably lower cost.

Epomaker TH33

+Extensive programmability via VIA software for key remapping and macros.
+Gasket mount structure with multiple internal foam layers for sound dampening.
+33-key layout includes a programmable knob, arrow keys, and navigation cluster.
+South-facing RGB LEDs compatible with Cherry-profile keycaps.
+Includes adjustable kickstand for three typing angles and extra accessories like switches and a keycap.

−ABS plastic case may feel less premium than other materials.
−More complex layout may have a larger footprint than a standard numpad.
−North-facing RGB on the YZ21 is not a con for the TH33, but the TH33's south-facing LEDs are a specific design choice that prevents interference with certain keycap profiles.

Yunzii YZ21 Numpad

+Simpler, potentially more compact 21-key numpad layout.
+Hot-swappable PCB supports 3-pin and 5-pin switches.
+Offers tri-mode connectivity (Bluetooth, 2.4GHz, wired).

−Lacks advanced programmability software like VIA or QMK support.
−Plate mount design may offer a different typing feel compared to gasket mounts.
−Smaller 1500mAh battery compared to the TH33's 2000mAh.
−Vendor listing shows the product as out of stock or for pre-order.

Which Keyboard Is Better for Your Needs?

The Epomaker TH33 is the more versatile choice, winning in scenarios demanding high programmability, extra keys, or a premium typing feel. Its advantages in gaming, office work, programming, and content creation stem from its VIA support, knob, and expanded layout. The Yunzii YZ21 may appeal for basic numeric entry and travel due to its potentially simpler and more compact form factor, but it lacks the advanced features of its competitor.

GamingEpomaker TH33

•The TH33 has a specified 1000Hz polling rate for wired and 2.4GHz modes, which the YZ21's listing does not mention.
•Its VIA software support allows for complex macro programming for in-game actions.
•The layout includes arrow keys and function keys useful for gaming shortcuts.

OfficeEpomaker TH33

•The TH33 offers more keys (33 vs 21), including dedicated arrow, delete, and page navigation keys.
•Its adjustable kickstand provides three typing angles for ergonomic comfort.
•The larger 2000mAh battery may offer longer wireless use between charges.

ProgrammingEpomaker TH33

•VIA software support enables deep key remapping and layer creation for coding shortcuts.
•The inclusion of arrow keys and navigation cluster is beneficial for text editing.
•South-facing RGB LEDs prevent interference with Cherry-profile keycaps, a common choice for programmers.

TravelYunzii YZ21 Numpad

•The YZ21 has a simpler 21-key layout, which may result in a more compact and lighter form factor (specific dimensions not provided for YZ21).
•Both offer tri-mode wireless connectivity, making cables optional.

ModdingEpomaker TH33

•The TH33 features a gasket mount design with multiple sound-dampening foams (Sandwich Latex, IXPE, PET film) for acoustic tuning.
•It includes a programmable knob, adding another customizable element.
•Both boards have hot-swappable PCBs compatible with 3-pin and 5-pin switches.

Content CreationEpomaker TH33

•The programmable knob on the TH33 can be mapped to timeline scrubbing, brush size, or volume control.
•VIA software allows for creating macros to automate repetitive editing tasks.
•User reviews mention using the TH33 as a budget stream deck for scene switching.