INFINMIND Wireless Ultra Slim Bluetooth Keyboard with Multi-Device Compatibility, Number Pad, Ergonomic Design, PC Computer Compact Keyboard for Windows, Mac, Laptop, Android
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Availability:
In Stock.
Arrives
Sunday, Jun 21
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Features
- Multi-Device Wireless KeyboardThe K820 keyboard supports connection to 3 devices, allowing you to switch between them using the FN + A/S/D keys. This provides greater convenience for your use.
- Ultra Slim Keyboard with Number PadThis slim and compact keyboard includes a numeric keypad, which saves 10% of desk space while still offering full keyboard functionality. The wireless keyboard stay connected at 33ft range, ideal for clutter-free desks in office/home/travel.
- Ergonomic DesignThis ergonomic keyboard is crafted to fit the natural shape of your fingertips, Adjustable stand providing all-day typing comfort. 5 non-slip pads on the bottom ensure stability, preventing unwanted movement during use.
- Long Battery Life & Auto Sleep FunctionPowered by 2 AAA batteries (included), provide 12 months of use.The wireless keyboard automatically enters sleep mode after 15 minutes of inactivity, effectively conserving battery power.
- Broad CompatibilityINFINMIND slim wireless keyboard compatible with Windows, iOS, macOS, and Android, this wireless bluetooth keyboard is suit for a wide range of devices including iPads, tablets, smartphones, laptops, desktops, and smart TVs.
Brand: INFINMIND
Compatible Devices: Laptop, PC, Tablet
Connectivity Technology: Bluetooth, USB-A
Keyboard Description: Multimedia
Recommended Uses For Product: Office, Home, Travel
Special Feature: Ergonomic, Portable
Included Components: 2 AAA batteries
Power Source: Battery Powered
Manufacturer: INFINMIND
Compatible Devices: Laptop, PC, Tablet
Connectivity Technology: Bluetooth, USB-A
Additional Features: Ergonomic, Portable
Power Source: Battery Powered
Brand: INFINMIND
Keyboard Description: Multimedia
Antenna Location: Office, Home, Travel
Built-In Media: 2 AAA batteries
Model Number: K820
Manufacturer: INFINMIND
Warranty Description: 1-Year Limited Warranty
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jun 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This keyboard impressed me. I've had many a portable keyboard, and while this might be in the same category, being all metal, the weight makes it a bit less portable, but higher quality. I can see using this in an office on a daily basis. The all metal case won't flex and the keys feel fine. My first point of surprise was the magnetic battery cover that works very well - plastic, but feels precise and high quality. I was disappointed in the use of 2 AAA batteries - just another thing for me to forget or have to include on a long trip; on the other hand, keyboards use very little power, so the included batteries should last a very long time. The sparse instructions described how to pair, and talked about onboard storage of the USB adapter if you can't or do want to use Bluetooth. It didn't describe WHERE to store it, and I checked under the magnetic battery door for a small area like other portable devices I have; it turns out there's a little magnetic slot on the side. I think there's a real chance of it falling out in a bag, so I would recommend extra care if you go that route. It was initially difficult to pair the BT with my Surface Pro 5 - BT would see it, but it wouldn't stay connected; there was no issue with the USB adapter. Turns out I needed to reboot my Surface, then all was well. You have an on-keyboard selectable choice of USB, BT 1, or BT2 - meaning 3 devices at a given time using keyboard combos to select. You can also specify on the keyboard if you want PC, Mac or Android, and if you want the rubber feet propped up to tilt the keyboard. All in all I think this is a great, well made wireless keyboard. It's also nice to have dedicated number keys. I tried showing the keyboard in relation to my Surface Pro 5.
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Reviewed in the United States on May 25, 2026 Reviewed in the United States on May 25, 2026 by Gary Garland
I've gotta say, right off the bat when I opened the box I was amazed by how solid this keyboard is. The back is metal, and it has some weight to it - not in a bad way unless you were planning on throwing it into your laptop bag. But it's a proper keyboard - many in this range are super lightweight, ultra plastic feeling. This is decidedly NOT that!! Pairing it with my PC was a breeze with the included USB Dongle, and I had no trouble with the bluetooth pairing -either, though I will note that it is NOT something that you'd easily figure out on your own. There is a keyboard combo to switch the device between bluetooth and 2.4GHZ wireless to the receiver. I'm actually going to include pictures of the full instruction pamphlet just in case someone loses theirs and needs a reference :D Here are some likes and dislikes. I give it a 4/5, and think it's a solid value, but it's not without some minor issues: - I really like the weight - I really like the size - I like that it has legs for angling the keys - I love that it has a full number pad - I love that the default behavior of the F keys is the F Key functionality, not lame shortcuts by default - I don't like that the battery cover is magnetic, and the magnets are weak - this is only an issue if you'd move it around a lot - I like that it has a slot for storing the USB receiver - I don't like that it's also magnetic and the magnets are pretty weak - as with the battery door, it could easily get lost if the keyboard is moved a lot - I do like that it also has bluetooth for when I lose the receiver ;) - It has both Mac & PC key labels for command, windows, alt, opt. - although the placement leaves a bit to be desired, I LOVE that they managed to find a place for the home/end/page up/page down keys. Overall, I do recommend this keyboard. If you're looking at it as a travel companion, I'd caution against that - due to both the weight and the likelihood of losing the battery cover, receiver, or both. BUT as a fairly stationary wireless keyboard, it's really nice.
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Reviewed in the United States on May 14, 2026 Reviewed in the United States on May 14, 2026 by Ian B.
I’ve used a lot of keyboards over the years, and most in this price range feel like cheap, lightweight plastic. This one is completely different. It has a metal back, a solid weight, and a build quality that feels almost over‑engineered. Due to the weighted feel, it stays put on my desk and doesn’t slide around while I’m typing. I also really appreciate that it isn’t rechargeable. It uses two AAA batteries, which means I never have to worry about plugging it in or dealing with a battery that eventually stops holding a charge. I had to toss my last keyboard for that exact reason, and that’s something I’ll never have to worry about with this one. Another feature I love is the dual‑connection option. It works with up to 3 devices - 2 over Bluetooth and 1 with the included 2.4G USB adapter. I keep the adapter plugged into my gaming PC for better performance and use Bluetooth with my laptop when I’m working. It’s perfect when my laptop is in clamshell mode, and even with a full number pad, the keyboard is compact enough to fit comfortably on my desk. After using it for a while, I can confidently say it’s one of the best keyboards I own - even better than one I bought recently that cost 4 times as much. The keys use a membrane design instead of clicky mechanical switches, which makes typing super quiet. The key action is smooth, the low‑profile layout is comfortable, and the built‑in risers make it easy to angle the keyboard just right. My only complaint is that the magnets on the battery cover could be stronger. They’re fine for everyday desk use, but if I were traveling with the keyboard, I’d worry about the cover coming loose. Overall, I’d recommend this keyboard to anyone who wants a sturdy, premium‑feeling wireless keyboard at a great price. It offers more functionality than many higher‑priced brands and delivers equal or better performance and reliability. Really impressive product.
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Reviewed in the United States on May 24, 2026 Reviewed in the United States on May 24, 2026 by gadgetjunkie
After opening this up, I want to start out by saying how nice this keyboard is. It has a substantial weight to it and a very solid build. The keys have a distinct feel to them that I have really only found in the Apple Magic keyboards. They are comfortable to type on, have a nice response, and do not feel cheap or mushy. There is also rubber on the bottom in a few different areas to keep it from sliding around on the desk, and the adjustable stand gives it a comfortable typing angle. Connecting it to Bluetooth was easy and took less than a minute with my Mac Mini, Windows 11 computer, and iPhone 16 Pro. I was also able to connect it to a Raspberry Pi using the 2.4G HID dongle. I love the fact that I can switch between devices in about a second and a half. That makes it really convenient if you are using multiple devices at your desk. The slim design is nice because it still gives you the number pad without feeling like a huge full sized keyboard. Keep in mind that this is really made more for a desktop setup since it does have some heft to it and is longer than a compact keyboard, but shorter than a full sized one. For me, that is a great balance because I still get the keypad without taking up too much desk space. I also want to give the seller credit for great customer service. I had a question that they were able to answer, and they were friendly and very responsive. It is hard to find companies that actually stand behind what they sell, so kudos to them. Honestly, this is one of the best made Bluetooth keyboards that I have found under 100 dollars that has a keypad on it. It feels premium, connects easily, switches devices quickly, and looks great on the desk. Grab one, you will not be sorry.
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Reviewed in the United States on May 21, 2026 by John A.
This wireless keyboard is compatible with Mac OS, Windows, Android, and iOS. It has risers on the back if you want to raise the back of the keyboard, you can flip the risers up or down. I'm enjoying the risers and find it's more comfortable to type. I've been using the standard wireless "magic" keyboard with my Mac computers for years so I wasn't sure if I would like this nameless/unknown brand but so far I am liking it quite a bit. The only reason I'm ranking this 4-stars and not 5-stars is because it requires 2 AAA batteries and is not rechargeable. There is an optional USB wired connector port but I'm not sure that it provides power. There's nothing in the included user booklet about that, only about using the USB instead of the wireless bluetooth connection. It appears this keyboard has 2 bluetooth settings so I think this means you can use it on 2 devices at the same time without having to disconnect and reconnect. Another thing I'm not crazy about is the lack of indicator light on the caps lock button. But there is an indicator light for caps lock, it's just a small blue light located near the top-right of the keyboard-- nowhere near the actual caps lock button, which is odd placement-- but the keyboard itself feels solid, not cheap plastic, and the keys are comfortable to type on. What I love about this keyboard already is the numeric keypad and the 4 navigation buttons above the numeric keypad, "home, end, page up, and page down" buttons work perfectly in Pages or Word to get around longer documents. I thought I would just connect this keyboard to test it and then want to switch back to my magic keyboard but now that I've tested it I'm actually going to keep using it and put my magic keyboard to the side. One last thing, the price of this keyboard is half the cost of the expanded magic keyboard from Apple. So I think this is a big win for this keyboard. I like it a lot.
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Reviewed in the United States on May 15, 2026 by Evan
This is a full-size, incredibly thin keyboard. It comes with a 2.4hz dongle for Windows machines but also supports Bluetooth for everything, including tables. As thin as it is, I was surprised to see that it is also very sturdy and could be use, in a pinch, as a weapon (self-defense ONLY, please.) It gains its thinness from ditching actual switches for a pressure-sensitive membrane underneath the key caps. But the key action is tactilely pleasant and quiet. My daughter snagged it for her games because my switch-based keyboard gave her trouble with her nails. The keys here are much shorter, solving that problem. One of the draws of switched-based keyboards is their responsiveness, especially those with cables, but she has no trouble using this keyboard for the games she plays. Her opponents still die gruesome deaths. One note: there is no Windows key. Which is to say, there is a key that functions as a Windows key, but it doesn't have the four-square Windows symbol on it. It's in the same place as you would expect, so it's not a big deal for us. There are myriad keyboards out there with every imaginable combination of features. If you need a very thin but sturdy option, I'd recommend starting with this one. At $30, it's great deal.
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Reviewed in the United States on May 15, 2026 by Just A Guy
This keyboard is a nice small compact keyboard, that is quite durable. Pros: * connects to 2 bluetooth and 1 dongle and switching between them is easy * durable - feels well made and keys are good for a compact style keyboard * functions great and is easy to type with * has rubber feet that keep it from sliding around * has legs to angle it while typing * it has dongle storage on the end. At first I didn't think there was one, but there is! great for keeping it with the keyboard and to not lose it Cons: * The back of it where batteries go is quite thick, making it less compact * The lights for each connection doubles as num lock caps lock and scroll lock, which was confusing at first. * battery cover is only held on by magnet, which is better than screws, but felt like it might fall off easily Overall this is a great keyboard to have around, especially if you want to switch between a PC and a tablet or laptop
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Reviewed in the United States on May 18, 2026 Reviewed in the United States on May 18, 2026 by Tradski
This keyboard is heavy enough to stay put, unlike some of the cheaper wireless (or even wired) keyboards. Most of the weight is in the back, and it has a good slope for your hands to rest. While not an ergonomic keyboard, it is comfortable to use. The keys have a good positive motion so you know they've been pressed. This is not a Bluetooth keyboard; it requires a 2.4GHz dongle to operate, so you need a free USB port. However, there are times when Bluetooth is not appropriate. If you have a desktop, you may not even have bluetooth. Also, if you are trying to get into the bios, or safe mode without drivers loaded, a Bluetooth keyboard will not even work. Fortunately, a 2.4GHz keyboard looks to the computer just like a wired keyboard plugged into a USB port. My only real problem with this keyboard is the cover for the battery case. While having magnets to hold the cover is a neat idea, and actually usefull on a device that required frequent battery changes (I hope that's not the case), it is a liability for my usage. I like wireless so that I can move the keyboard around. I'm a teacher, and frequenly want to toss the keyboard aside to make room on my desk for grading papers and such. All that jostling and banging of the keyboard can knock the battery cover off. Not every time, but occasionally. Still, I'm just waiting for the time that it gets lost or I run my chair caster over it. That cost it a star, though others may see it as a bonus.
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Reviewed in the United States on May 14, 2026 Reviewed in the United States on May 14, 2026 by William