What makes the Skyloong GK21S numpad unique?

The Skyloong GK21S numpad stands out with its hot-swappable switch capability. This allows users to easily customize their numpad without soldering, offering compatibility with Cherry MX, Kailh, and Gateron switches. Additionally, its dual-mode connection via Bluetooth 5.1 and USB-C provides flexibility for various setups.

How do I connect the GK21S numpad using Bluetooth?

To connect the GK21S numpad via Bluetooth, simply long press the Fn key along with 7, 8, or 9. This will initiate the Bluetooth pairing mode, allowing you to connect to your device seamlessly using the latest Bluetooth 5.1 technology.

Can I customize the RGB lighting on the Skyloong GK21S?

Yes, the Skyloong GK21S numpad features 16.8 million RGB colors and offers various lighting combinations. You can use the downloadable driver to customize the backlight and create macros, with three programmable layers for a personalized experience.

Is the numpad compatible with both Windows and macOS?

Absolutely! The Skyloong GK21S numpad is compatible with Windows, macOS, iOS, and Android systems, making it a versatile choice for any setup. Whether you prefer a wired or wireless connection, it supports both seamlessly.

What is the battery life of the GK21S numpad when using Bluetooth?

The GK21S numpad is equipped with a 750mAh battery, providing ample power for extended use. Thanks to its energy-efficient Bluetooth 5.1 technology, you can enjoy long-lasting performance without frequent recharges.

How does the hot-swappable feature work on the GK21S numpad?

The hot-swappable feature of the GK21S numpad allows you to easily change out switches without any soldering. Simply pull out the existing switches and insert new ones, giving you the freedom to experiment with different switch types and feel.

What materials are used in the construction of the GK21S numpad?

The GK21S numpad is available in two case materials: ABS plastic and CNC aluminum. Both options offer durability and a premium feel, with the aluminum case providing a slightly heavier and more robust build.

Does the GK21S numpad support anti-ghosting?

Yes, the Skyloong GK21S numpad supports full key anti-ghosting. This ensures that all your key presses are registered accurately, even when pressing multiple keys simultaneously, which is ideal for fast-paced tasks and gaming.

Skyloong GK21S Numpad Starting at $42.99

Name: Skyloong GK21S Numpad
Brand: Skyloong
SKU: skyloong-gk21s-numpad-2-mode-diy-kit

Vendor	Location	Coupon Code	In Stock	Price (USD)	Link*
Skyloong GK21S Numpad
	Global	-	Check vendor	Check vendor	Visit shop
SKYLOONG GK21S Numpad 2 Mode DIY Kit
	Shipping to US	-		$43 Out of stock	Visit Shop

Vendor

Location

Coupon Code

In Stock

Price (USD)

Link*

Skyloong GK21S Numpad

Global

Check vendor

Visit shop

SKYLOONG GK21S Numpad 2 Mode DIY Kit

Shipping to US

$43

Out of stock

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Compare Skyloong GK21S Numpad vs Epomaker EK21 vs Epomaker TH33 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!

Model	Skyloong GK21S Numpad	Epomaker EK21	Epomaker TH33
	76	84	83
Rating	0.0 stars (0 reviews)	4.5 stars (13 reviews)	5.0 stars (4 reviews)
Purchase Options
Main differences	Released in 2022 Supports Bluetooth, Wired, Wireless connectivity Equipped with a 750 mAh battery Weighs about 400 g Made with a Aluminum, Plastic case	Equipped with a 1000 mAh battery Weighs about 200 g Sized at 29 x 138 x 93 mm	Equipped with a 2000 mAh battery Weighs about 380 g Sized at 45 x 151 x 141 mm Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 58.9 Build Quality: 74.2 Productivity: 81 Customizability: 81.2 Portability: 89.4	Scores Performance: 77.3 Build Quality: 77.3 Productivity: 87.8 Customizability: 83.1 Portability: 88	Scores Performance: 77.7 Build Quality: 77.5 Productivity: 88 Customizability: 83.4 Portability: 90.2
Name	Name Skyloong GK21S Numpad	Name Epomaker EK21	Name Epomaker TH33
Release year	Release year 2022	Release year 2025	Release year 2025
Switch Options	Switch Options -	Switch Options Linear	Switch Options Linear
Profile	Profile Normal Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size Numpad	Layout Size Numpad	Layout Size Numpad
Layout Standard	Layout Standard ANSI	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 750 mAh	Battery capacity 1000 mAh	Battery capacity 2000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style -	Mount Style Gasket Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum, Plastic	Case Material ABS	Case Material ABS
Keycaps Material	Keycaps Material -	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions -	Dimensions 29 x 138 x 93 mm	Dimensions 45 x 151 x 141 mm
Weight	Weight 400g	Weight 200g	Weight 380g

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Product Description

The Skyloong GK21S Numpad is a compact, 21-key external numeric keypad designed for users who want flexible input options and easy switch customization. It suits professionals or hobbyists needing a portable numpad with wireless and wired connectivity, plus hot-swappable switch support for personalized typing feel. Its RGB lighting and macro layers add programmability for workflow or gaming enhancements.

Key Features

Hot-swappable sockets support 3-pin and 5-pin Cherry MX, Kailh, and Gateron switches, allowing switch changes without soldering.
Bluetooth 5.1 wireless and USB-C wired dual mode provide versatile connectivity for desktop or mobile use.
Large 750mAh battery supports extended wireless use, with Bluetooth pairing via Fn key shortcuts.
RGB backlighting offers 16.8 million colors with customizable effects and three programmable macro layers for tailored lighting and key functions.
Built-in flash memory saves settings offline, preventing loss when disconnected from software.

Build Quality

Available in ABS plastic or CNC aluminum cases, balancing lightweight portability or increased durability.
Sound-absorbing foam and silicone pads reduce typing noise and vibrations, improving acoustic comfort.

Compatibility and Software

Compatible with Windows, macOS, iOS, and Android, covering most common devices.
Driver software enables programming of lighting and macros, supporting three function layers for complex customization.

Trade-offs

Limited to 21 keys, so it may not replace full keyboards for users needing additional functions beyond numeric input.
Bluetooth latency and battery life details are unspecified, which may affect wireless performance expectations.
Software support requires downloading drivers, which may not suit users preferring plug-and-play solutions.

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