I bought the Nelko P21 label maker because I run a small company and I was tired of my own packaging. Every order left with a sticker I’d written by hand, and it looked like it. The P21 is about the size of my phone, cost less than a decent dinner, and I’ve been printing product labels with it ever since. This is what it’s actually like to own one.
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Quick verdict
If you’re a small seller who needs price tags, name labels and product stickers that look tidy, the Nelko P21 does that for very little money and almost no setup. You drive it from an app on your phone over Bluetooth, it prints in black only, and the color comes from whatever tape you load. There’s no ink, no cartridge, and the labels peel clean. It is not a computer accessory and it is not for labeling boxes all day — the fixed label lengths and the phone-only workflow are real limits. For what I use it for, product labels that customers actually read, it does the job every week. check current price on Amazon
Why I bought it
My company sells physical products, so every item that goes out needs something on it: a name, a price, a flavor, a size. Handwritten stickers were the cheapest option and they made decent products look cheap. I wanted a label that looked like the product came from a business, without hiring a print shop or buying a proper desktop label system.
What pushed me to the P21 over the alternatives was the size and the price. It fits in a drawer, it runs off a rechargeable battery, and it doesn’t need a laptop or a desk. I bought it in the same order as the tape, because the printer only prints black, and I wanted color.
The app mattered too. The listing says it comes with thousands of icons, borders, materials and templates built in, plus support for barcodes, QR codes and images. I didn’t want to design anything in a graphics program — I wanted to type a name, pick a layout and print.
What it’s like to use
The setup is exactly as short as the listing claims. Charge it, install the app, pair over Bluetooth, load a roll, print. My first label existed inside five minutes, and it was a small sticker for a product jar. There’s no adjusting rollers and no ink to prime; you type in the app, hit print, and the label comes out of the slot at the top.
In daily use it’s a pocket tool, which is the whole point. I keep it in a drawer with a couple of rolls, pull it out when I’m packing, print the labels I need, and put it back. Because the tape comes on rolls, printing four labels for one order wastes nothing — that’s not true of pre-cut label sheets.
Black text on colored tape is where it earns its place. The printer can’t print in color, so the tape does that job — blue and yellow for my two main product lines, pink for samples. That was the thing customers reacted to. A plain black label on colored tape reads as deliberate, and I now sort stock by tape color instead of reading every label.
I also use the same tape the P21 takes with the printer itself, and I wrote a full Nelko P21 label maker tape review of the Blue/Yellow/Pink three-roll pack if you want the tape side of this in detail. Short version: it’s genuine Nelko tape, the chip on the strip lets the printer recognize the roll, and 180 labels per roll goes further than it sounds.
Two things I had to get used to. The first is that the label length is fixed by the tape size rather than by how much text you type, so a long product name wraps or shrinks instead of extending the label. The second is that the printer is phone-only — the listing states plainly that it doesn’t work with computers, so if you were hoping to print from a laptop, this isn’t that device.
Key specs
| Printer type | Direct thermal, monochrome (black text only) |
|---|---|
| Resolution | 203 DPI |
| Size | 6.65″ x 4.5″ x 1.9″ |
| Weight | 11.52 oz |
| Connection | Bluetooth, via the Nelko app (iOS and Android) |
| Computer support | None — the listing says it doesn’t work with computers |
| Known compatibility issue | Not compatible with Google phones running Android 14 |
| Battery | Built-in rechargeable; charging adapter not included |
| Label sizes | Fixed lengths including 14x40mm, 14x50mm, 14x75mm; continuous tape not supported |
| App features | 3,600+ icons, 700+ borders, 750+ templates, 29 languages; text, QR code, barcode, images, borders |
| Don’t do this | Don’t tear the chip or the green sticker on the label strip |
The size and weight are why this ends up on my packing table instead of in a cupboard. It’s a handheld label maker, not a desktop one. check current price on Amazon
Who should skip it
Skip it if you want to print from a computer or a laptop — the P21 is phone-only, and the listing says so directly. Skip it if you need labels longer than the fixed 14x40mm / 14x50mm / 14x75mm sizes, or continuous tape, because neither exists here. And if your labeling is shipping boxes all day, a 4×6 shipping label printer is the right tool and this one will frustrate you.
FAQ
Does the Nelko P21 label maker work with a computer?
No. The P21 connects over Bluetooth to the Nelko app on an iOS or Android phone, and the listing states it doesn’t work with computers. Everything happens in the app: you type, add icons or a barcode, and print. If you need to print from a desktop, look at a different class of label printer instead of working around this one.
Can the Nelko P21 print in color?
The printer itself prints black text only, using heat rather than ink. Color comes from the tape you load, which is why the different color rolls exist. Load Blue, Yellow or Pink tape and you get black print on that color. It also means there’s nothing to dry and nothing to refill, and the labels come out ready to peel.
What tape does the Nelko P21 take?
It takes Nelko P21 label tape in fixed lengths such as 14x40mm, 14x50mm and 14x75mm. Continuous tape isn’t supported, so label length is set by the roll you buy. The strips carry a small chip and a green sticker the printer reads to recognize the size — don’t tear those off, or print quality and alignment suffer.
Bottom line
I bought the P21 to stop shipping products with handwritten stickers on them, and it solved that in the first ten minutes and has kept solving it since. It’s a phone-driven, black-ink, fixed-length label printer, and once you accept those three facts it’s a genuinely useful pocket tool for a small seller. Pair it with the colored tape and the labels stop looking homemade. check current price on Amazon