Compare Weikav Stars21 Programmable Numpad vs Yunzii C21 Numpad Calculator Differences Side by Side

Explore the comprehensive side-by-side comparison of the Weikav Stars21 Programmable Numpad and Yunzii C21 Numpad Calculator and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

Model
	80	64	Select a keyboard to compare
Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
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Main differences	Released in 2025 Built with the ANSI layout standard Includes a No display Supports QMK firmware Supports VIA configuration Equipped with a 800 mAh battery Weighs about 480 g Sized at 18 x 130 x 95 mm Made with a Aluminum case Offers Yes, Rgb RGB lighting	Released in 2026 Includes a Yes, TFT display Compatible with both Mac and Windows Connects via USB-C Equipped with a 2500 mAh battery Weighs about 250 g Sized at 39 x 153 x 98 mm Features PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 75.6 Build Quality: 84 Productivity: 56.6 Customizability: 89 Portability: 77.7	Scores Performance: 69.9 Build Quality: 63.2 Productivity: 58.4 Customizability: 66.2 Portability: 88.2
Name	Name Weikav Stars21 Programmable Numpad	Name Yunzii C21 Numpad Calculator
Release year	Release year 2025	Release year 2026
Switch Options	Switch Options Linear	Switch Options 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 -
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support TFT
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 1000 Hz
Battery capacity	Battery capacity 800 mAh	Battery capacity 2500 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 Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum	Case Material -
Keycaps Material	Keycaps Material -	Keycaps Material PBT
Dimensions	Dimensions 18 x 130 x 95 mm	Dimensions 39 x 153 x 98 mm
Weight	Weight 480g	Weight 250g