SOLAKAKA K21 RGB Backlit Wireless Mechanical Number Pad

In this review the SOLAKAKA K21 is presented as a compact, customizable mechanical number pad aimed at users who want a tactile, programmable companion for data entry and gaming macros. The bottom line is that the K21 delivers a satisfying mechanical typing feel and broad connectivity options - supporting Bluetooth, 2.4GHz wireless, and Type-C wired modes - which makes it a strong choice for people who switch between devices frequently and value customization. The transparent pudding-style keycaps and RGB effects are a visual bonus rather than a core selling point.

Key Features

• Triple-mode connection: Switch quickly between Bluetooth, 2.4GHz wireless, and Type-C wired modes to work with PCs, laptops, MacBooks, and mobile phones without reinstalling hardware.
• Multi-device pairing: The K21 can save up to five devices, making it easy to move from a laptop to a tablet or phone and resume work without repeated pairing.
• Ice crystal switches: Lubricated mechanical switches provide a smoother press and more comfortable sound than standard switches, which benefits users who value tactile feedback and audible click.
• Hot-swappable socket: The 3-pin and 5-pin Cherry-style hot-swap design lets users replace switches and keycaps for custom feel and aesthetics without soldering.
• RGB backlight: Eighteen preset RGB lighting effects and translucent pudding keycaps create an attractive, evenly lit surface that enhances visibility and style.
• Macro support: Custom software lets users program macros across the 21 keys for data entry, shortcuts, or gaming commands, though basic use works without installing drivers.

Who It's For

The K21 suits professionals and creatives who need a dedicated number pad with mechanical key feel and quick switching between multiple computers or mobile devices. It is also a good pick for gamers and macro users who want programmable keys and the ability to swap switches and keycaps for a tailored typing experience.

Those who should look elsewhere include users who require full-size keyboards, integrated full-key rollover for competitive esports, or a completely driverless plug-and-play experience where lighting and macro setup must work identically without any software. Some customers report mixed experiences with lighting or connectivity, so a buyer wanting absolute perfection in those areas may prefer to test compatibility first.

Pros & Cons

Pros

• Satisfying mechanical feel from lubricated ice crystal switches for smooth presses and a pleasant click.
• Flexible connectivity with Bluetooth, 2.4GHz, and wired Type-C plus memory for five devices.
• Hot-swappable 3-pin/5-pin sockets let users customize switches and keycaps without soldering.
• Programmable macros and 18 RGB lighting effects that work with translucent pudding keycaps for a distinctive look.

Cons

• Some users report occasional issues with lighting or connectivity, so experience can vary across setups.
• As a compact 21-key pad, it is not a replacement for a full numeric keypad with extra function keys for users who need more keys.

Specifications

Brand	SOLAKAKA
Model	K21 21-key numpad
Connection modes	Bluetooth, 2.4GHz wireless, Type-C wired
Switch type	Ice crystal lubricated mechanical switches (hot-swappable)
Hot-swap	3-pin and 5-pin Cherry-style compatible
Backlight	18 RGB lighting effects with translucent pudding keycaps
Compatibility	Windows, Mac OS, mobile phones; macros via driver software optional

Our Verdict

The SOLAKAKA K21 is a well-rounded mechanical numpad for anyone who wants a tactile, customizable pad with flexible connectivity and macro capability. It represents good value for users who will take advantage of hot-swappability and programmable keys, and those who move between several devices will appreciate the multi-device pairing. Buyers who need a fully foolproof lighting or connectivity experience should verify compatibility, but most users will find the K21 a worthwhile compact peripheral.

Frequently Asked Questions

Can the K21 be used wired and wireless?
Yes, it supports Type-C wired use and two wireless modes: Bluetooth and a 2.4GHz dongle, and it can save up to five paired devices.

Are the switches replaceable?
Yes, the K21 uses a hot-swappable 3-pin and 5-pin Cherry-style socket so switches and keycaps can be changed without soldering.

Do I need software to use macros and lighting?
Macros and custom lighting require the vendor driver software, but basic typing and connectivity work without installing drivers.