RK M20 Wireless Numpad Calculator – RGB Hot-Swap 17 Keys
RK M20 Wireless Numpad Calculator – RGB Hot-Swap 17 Keys
RK Royal Kludge M20 – Wireless Numpad & Calculator in One
Meet the RK Royal Kludge M20 — a compact 17-key mechanical numpad that doubles as a fully functional standalone calculator. Whether you're crunching numbers at the office or streamlining data entry at your desk, the M20 delivers premium build quality, flexible wireless connectivity, and stunning RGB lighting in a whisper-quiet, portable package. Made in Mainland China.
Key Features
1. Calculator & Numeric Keypad — 2-in-1
Switch seamlessly between a standard numeric keypad and a standalone calculator mode with a single turn of the multi-function knob. No PC required for quick on-the-fly calculations — perfect for office work, accounting, and fast data entry.
2. Tri-Mode Connectivity
Connect your way — choose between Bluetooth, 2.4G wireless, or USB-C wired mode. Compatible with both Windows and macOS, making the M20 effortlessly versatile across desktops, laptops, and tablets.
3. Long-Lasting 1000mAh Battery
The large-capacity 1000mAh battery provides up to ~50 hours of use with the backlight off, and recharges in approximately 2.5 hours via USB-C fast charging. A magnetic storage compartment on the underside keeps the 2.4G receiver secure when not in use.
4. Hot-Swappable Switches & Double-Shot PBT Keycaps
Supporting both 3-pin and 5-pin hot-swap switches (Cream or Violet options), you can customize your typing feel without soldering. The double-shot PBT keycaps are fade-resistant and built for lasting durability — a true enthusiast-grade upgrade in a compact form factor.
5. 16.8 Million-Color RGB Backlighting
Enjoy vibrant RGB backlighting with 5 distinct lighting modes, all adjustable via convenient hotkeys. From subtle breathing effects to dynamic per-key colors, set the mood that fits your workspace.
6. Quiet Gasket-Mount Structure with Triple Sound-Dampening
The TOP-mount gasket design combined with three layers of sound-dampening material — Poron foam, IXPE switch pad, and bottom foam — significantly reduces typing noise and produces a satisfying, muted keystroke. Anti-slip silicone feet keep the pad firmly in place.
7. Multi-Function Control Knob
The 3-position knob gives you instant control over backlight on/off and toggling between calculator and numpad modes — no software needed.
Specifications
- Brand: RK Royal Kludge
- Model: RK M20
- Keys: 17
- Color: Phantom
- Switch Options: Cream Switch / Violet Switch (Hot-Swappable, 3-pin & 5-pin)
- Connection: USB-C Wired / 2.4G Wireless / Bluetooth
- Backlighting: RGB (16.8M colors, 5 modes)
- Keycap Material: Double-Shot PBT Plastic
- Battery: 1000mAh (~50 hrs backlight off, ~2.5 hr charge)
- Interface: Type-C
- Compatibility: Windows & macOS
- Dimensions: 93.2 × 155.8 × 38.5 mm
- Certification: CE, FCC, RoHS
- Origin: Made in Mainland China
What's in the Box
- 1× RK M20 Numpad Keyboard
- 1× Dust Cover
- 1× 2-in-1 Keycap & Switch Puller
- 1× Type-C Cable
- 1× User Manual
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Frequently Asked Questions
Q: Can the RK M20 numpad work as a standalone calculator without a computer?
A: Yes! The RK M20 features a built-in calculator mode that operates independently of any connected device. Simply use the multi-function knob to switch from numpad mode to calculator mode and perform calculations directly on the keypad — no PC or software required.
Q: What wireless connections does the RK Royal Kludge M20 support?
A: The RK M20 supports tri-mode connectivity: Bluetooth (for wireless pairing with laptops/tablets), 2.4G wireless (via the included USB receiver stored magnetically in the base), and USB-C wired connection. It is compatible with both Windows and macOS operating systems.
Q: Are the switches on the RK M20 hot-swappable, and which switch types are compatible?
A: Yes, the RK M20 features a fully hot-swappable PCB that supports both 3-pin and 5-pin mechanical switches. This means you can swap out switches without any soldering, making it easy to customize your typing feel. It comes with your choice of Cream or Violet switches.
Q: How long does the battery last on the RK M20 wireless numpad?
A: The RK M20 is equipped with a 1000mAh battery that provides approximately 50 hours of use when the RGB backlight is turned off. With the backlight on, battery life will vary depending on brightness and lighting mode. The keyboard recharges fully in approximately 2.5 hours via the included Type-C cable.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.