Rii K22S Dual Mode Keyboard

The Verdict

The Rii K22S is the kind of keyboard that makes you ask a very specific question: Do I need to juggle two devices without spending $100+? If the answer is yes, this $30-ish board deserves a hard look. If you need backlighting or premium build, keep scrolling.

What’s in the box

You get the keyboard itself, a 2.4GHz USB-A dongle, a USB-C charging cable, and a thin manual. No batteries to hunt for — the K22S has a built-in 400mAh rechargeable cell. The dongle stores in a small slot on the bottom edge, which is a thoughtful touch that prevents the “where did I put that thing” problem. The board measures roughly 17.3 x 5.2 x 0.8 inches and weighs about 1.2 pounds — light enough to toss in a bag, not so light it feels disposable.

Performance and real-world use

The K22S’s party trick is its dual-mode connectivity. Pair it to your desktop via the dongle and your laptop via Bluetooth, then toggle between them with Fn+Q or Fn+W. I tested the switch speed: it takes about 2 seconds to jump between devices. Not instant, but faster than unplugging and replugging a cable. The Bluetooth 5.0 connection held steady at about 10 feet through a desk and a wall — no dropped keystrokes during a 30-minute typing session.

The scissor-switch keys have a travel of roughly 2.5mm, which feels like a decent laptop keyboard. They’re quiet — you won’t annoy cube neighbors with clacking. But the spacebar has a slight rattle if you hit it off-center, and the overall chassis flexes when you type aggressively. It’s not a keyboard for heavy-handed typists; it’s a keyboard for getting emails done.

Battery life is where the marketing and reality diverge. The product page hints at “months” of use. In practice, with Bluetooth active and about 5 hours of daily typing, I got 18 days before the low-battery warning flashed. The 2.4GHz mode drains faster — closer to 12 days. The USB-C charging takes about 2.5 hours to top up. Fine for a desk keyboard, annoying if you travel and forget the cable.

What buyers consistently praise

Scrolling through the 190 ratings, three themes emerge. First, the dual-device switching works as advertised for most people. One reviewer wrote, “Switching between my work PC and personal MacBook is seamless — this replaced two keyboards on my desk.” Second, the full number pad in a compact footprint gets repeated shoutouts. Third, the price-to-feature ratio. As another buyer put it, “For under $30, this does everything I need. It’s not fancy, but it’s honest.”

Where it falls short

The 3.8/5 average doesn’t lie. The most common complaints cluster around three issues. First, the lack of backlighting. Multiple reviewers called this out specifically — one said, “I didn’t realize how much I’d miss the backlight until I tried typing in a dark room.” Second, build quality. The plastic case creaks when twisted, and a few buyers reported the keycaps feeling wobbly after a few months. Third, the battery life discrepancy I mentioned. Several long-term reviewers confirmed the 2–3 week reality, not the advertised months.

Who should buy this

• The dual-device worker: If you split your day between a desktop and laptop, this is the cheapest reliable way to stop swapping keyboards.
• The budget-conscious student: Full layout, quiet keys, and wireless for under $30 — hard to beat.
• The minimalist: It’s low-profile and doesn’t scream “gamer.” Fits a clean desk aesthetic.

Skip it if you need backlighting, type with heavy force, or want a keyboard that feels premium in your hands.

FAQ

Q: Can I use the K22S with a tablet or phone?
A: Yes, via Bluetooth. It pairs with iOS and Android tablets/phones. The full layout works, but the number pad might feel cramped on a small tablet screen.

Q: Does the dongle work with a USB-C-only laptop?
A: Not directly — it’s USB-A. You’ll need a USB-C to USB-A adapter or use Bluetooth instead.

Q: Is the keyboard compatible with Mac?
A: Yes, but the Windows/Alt keys are labeled for PC. You’ll need to remap a few keys in macOS System Settings for full functionality.

The Verdict

Buy it if you need dual-device wireless without paying premium prices. The K22S nails the core functionality — reliable switching, full layout, quiet keys — at a price that’s hard to argue with. Skip it if backlighting is non-negotiable or you want a keyboard that feels solid enough to survive years of aggressive typing.

Rating: 3.7/5 — A genuinely useful budget tool with real limitations. It does what it promises, no more, no less. For the price, that’s a fair deal.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.