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The 420B Thermal Printer redefines label printing with its massive 500+ sheet built-in tray, ultra-fast 2-minute setup, and industry-leading 99.99% barcode scan accuracy. Compatible with all major OS and e-commerce platforms, it boasts a 3x longer lifespan print head and ink-free thermal tech that slashes costs by 70% annually. Compact yet powerful, it’s the ultimate tool for professionals who demand efficiency and reliability in their shipping workflow.












| ASIN | B099PPP5FW |
| Additional Printer Functions | Print Only |
| B&W Pages per Minute | 175 ppm |
| Best Sellers Rank | 9,393 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 11 in Desktop Thermal Label Printers |
| Box Contents | Labels |
| Brand | vretti |
| Brand Name | vretti |
| Color Depth | 1 bpp |
| Color Pages per Minute | 175 ppm |
| Colour | Black |
| Compatible Devices | Laptops |
| Connectivity technology | USB |
| Control Method | App |
| Controller Type | Button Control |
| Country of Origin | China |
| Customer Reviews | 4.3 out of 5 stars 1,018 Reviews |
| Dual-sided printing | Yes |
| Duplex | Automatic |
| Hardware Interface | Ethernet |
| Ink Colour | Black |
| Item Dimensions D x W x H | 29.5D x 20.5W x 18.8H centimetres |
| Item Weight | 10.92 Kilograms |
| Manufacturer | vretti |
| Maximum Copy Resolution Black and White | 203 |
| Maximum Copy Resolution Color | 175 pages_per_minute |
| Maximum Copy Speed Black and White | 175 ppm |
| Maximum Print Resolution Black and White | 300 |
| Maximum Sheet Capacity | 75 |
| Maximum Supported Paper Size | 108mm x 1778mm |
| Maximum print Resolution Color | 203 DPI |
| Model Name | 420B |
| Model Number | AZ-420B-B-UK |
| Model Series | 420 |
| Model name | 420B |
| Network Connectivity Technology | USB |
| Number of Drivers | 1 |
| Number of Trays | 1 |
| Other Special Features of the Product | Portable |
| Output sheet capacity | 70 |
| Paper Size | 15.24 centimeters |
| Power Consumption Size | 275 Watts |
| Print media | Labels |
| Printer Output Type | Monochrome |
| Printer Resolution Horizontal Max in Color | 108 Centimeters |
| Printer Resolution Horizontal in Black and White | 80 Centimeters |
| Printer Type | Thermal |
| Printing technology | Thermal |
| Processor Count | 1 |
| Resolution | 203DPI |
| Series Number | 420 |
| Special feature | Portable |
| Specific Uses For Product | Label printing, e-commerce platform compatibility |
| Total USB 2.0 Ports | 1 |
| Total USB Ports | 1 |
| UPC | 602309953690 |
| Unit Count | 1.0 count |
| Warranty Type | limited warranty |
| Wattage | 600 watts |
A**R
Great label printer
Very easy to set up and format settings. Nice and compact and can print from several devices. Label printing is quick. Recommended product and value for money
M**N
Really good. Really really good.
It expected it to be good and it is good. Device quality is more than decent and print quality is as good as it gets (thermal printing quality depends more on the paper than the printer). I wish it didn't have to come with additional power supply brick, which has a very peculiar plug. Still, as long as it works, it's no problem at all. Two things that might help. First, the MacOS driver from the website is obsolete and does not work. The driver from USB that came with the printer works fine. Quick installation and it just works. The driver comes with some funny spelling errors, that tell a story about quality control. The company seems to be more focused on hardware than software, but fortunately in this case no software is needed beside the driver. Second, it is designed to take 1" diameter paper rolls. But it does work with more standard 1.5" rolls. Bigger roll does not sit very tight on a smaller axle, but it does not cause any problems. After initial setup it is wonderfully useful and comfortable device. Quick to use, fast, efficient and not loud. It's ready to print instantly and you need no extra work - no manual loading paper, no ink replacement, no waiting for it to warm-up. Paper rolls inside the device really make a difference. It makes you want to print tons of labels and stick them everywhere. Which I do.
A**N
Very fast and good printing
This printer is amazing ,I use for my shop ,perfect
R**D
Would not work via bluetooth with Windows PC but it is great with my phone and the app is quite good
As a label printer used solely from my phone, this works really well. The printer is upstairs tucked away as I don't like clutter and yet I can print to it from my phone via the bluetooth link from my kitchen which is great. I've been using it for a few months now for my ebay sales and it hasn't missed a beat. I was initially a bit disappointed as it would not print from my PC using bluetooth and my original review follows; I found the instructions were decent compared to another of this type of printer I had tried and it was simple to set up for printing from my phone. Sadly though despite being able to add it as a Bluetooth device on my PC, I kept getting the 'no driver' message and it proved impossible to resolve despite a few hours spent uninstalling and reinstalling and watching various videos and trying to reload the driver as instructed. Not great as it was specifically for using wirelessly with Bluetooth on my PC that I purchased this printer - now I send labels to my phone to get printed as I don't want the clutter of a wired printer on my desktop.
S**E
Fast, Reliable and Perfect for Shipping Labels
This Vretti thermal label printer is excellent for printing 4x6 shipping labels. Setup was straightforward, it connects easily via USB, and it works smoothly with common shipping platforms. The print quality is sharp and clear, with barcodes scanning perfectly every time. It’s quick, quiet, and doesn’t require ink, which keeps running costs low. The compact size is also ideal if you’re short on desk space. A great option for small businesses or regular online sellers. Reliable, efficient, and very good value for money. Highly recommended.
C**Y
Unreliable and temperamental. Very frustrating!!
NB I think this listing has changed since I made my purchase at the end of November 2022 - I bought the Bluetooth version. Also…I initially wrote a 1 star review as the printer simply wouldn’t work, but I later updated the score to 4 stars and amended my written review as described below. However today - 17th September 2023 - I am updating the score to 1 star and adding further comments at the bottom of my review. I did a lot of research before buying this printer and I chose this one because it had all the features I wanted (Bluetooth printing, can take different sizes of labels, labels stored inside the printer, compact, easy to use) at a good price. However, it ended up being a huge let down at first. Although it was easy enough to download the app and connect to the printer from my iPhone, I just couldn't get to grips with printing a label successfully. The instruction manual is in poorly translated English so it's not particularly helpful, and the app is not intuitive and parts of it are in Chinese so it's pretty useless. I was able to import a returns label but for some reason whenever I tried to print it the printer would think about it for 30-60 seconds and then spew out a tiny QR code as shown in the photo. The code isn't even related to the label I was trying to print; when I scan it it comes up as '123457789', so it must be a test code or something. I tried asking for help but got no reply, so customer support is completely lacking. It was so frustrating to continuously waste labels so I decided to give up and I intended to return the printer for a refund. What a waste of time and trouble. However, I decided to give the printer a final try (if only to print its own return label!!) and it suddenly started working properly. I didn’t do anything differently; it was as if the printer all of a sudden wanted to play ball for some unknown reason and I can’t say I was unhappy about that! Now it prints labels in a matter of seconds and I’m absolutely thrilled. I may need to play around with the thickness of the printing as some of the barcodes can look a little thick…but that said they still scanned without issue by both Evri and Royal Mail so perhaps I’m better off leaving well alone! The fact this printer is black is a big plus to me as it looks slick and it won’t change colour over time (I hate how white plastic so often yellows as it ages). I would have liked it to come with a few sample labels for practice runs, but I’ve not marked down for the fact it doesn’t as this is mentioned in the listing so it came as no surprise. So if you have a similar experience to me at first, don’t despair as hopefully your printer will suddenly buck up its ideas like mine did! UPDATE 17/09/2023 Please do not waste your time and trouble on this printer. I have spent the past 3 hours trying to print a label but the printer does nothing. I started experiencing issues a few weeks ago when the printer spat out blank labels. I cleaned the print head with isopropyl alcohol as directed but this did nothing. Eventually after many tries it did print something but it was partially off the page and I had no idea why. I had set everything up as normal but for whatever reason the printer decided to play up. I reprinted it several times, each time adjusting the position so that finally it did print fully on the label, even though on my phone's screen it was showing as hanging off the page. So bizarre. Today I have gone to print a label and it spat out blanks again. I cleaned the print head; no change. I reinstalled the app; no change. The app keeps telling me 'printing completed' but I'm still sat here waiting for my label to print. It is so frustrating and it has wasted so much of my time. When it works properly this printer is great. But when it doesn't work the app compounds your frustration and exasperation by acting as if nothing's wrong. No error messages or anything to help explain the problem. Please save yourself the same hassle and inconvenience - don't buy this printer!!
C**.
Excellent Label Printer
Excellent Product, works that well, I have purchased 3 more since this one.
E**A
Easy to install
Amazing
M**E
Ottima stampante termica sotto ogni punto di vista
La stampante termica arriva in una confezione molto ben imballata, dove al suo interno troviamo: - Stampante termica vretti - Cavo USB - Alimentatore con presa schuko - Asta e fissaggi per rotolo di etichette - Manuale utente multilingue - Chiavetta USB con driver per diversi sistemi La stampante è ben fatta, presenta un tasto di accensione e spegnimento nella parte posteriore e un solo tasto sulla parte superiore che serve per allineare le etichette o per stampante un foglio di test. Nella parte inferiore troviamo 4 piedini in gomma che permettono alla stampante di non scivolare dal piano di appoggio. La configurazione della stampante è molto semplice, basta attaccare tutti i cavi come indicato nelle istruzioni, inserire la chiavetta USB nel computer e seguire il video-tutorial passo passo. Il software fornito nella chiavetta USB servirà ad installare i driver necessari per il suo corretto funzionamento e non si dovrà configurare niente, tutto avverrà in maniera automatica (installazione eseguita su un sistema Windows 11). Questa stampante permette di utilizzare etichette con una larghezza che varia da 25,4 a 115 mm, con velocità massima di uscita di 152 mm/s, quindi perfetta per stampate le classiche etichette in rotolo da 4x6 (compatibile quindi con etichette eBay, UPS, BRT, e altri.). Essendo una stampante termica non è richiesto inchiostro o nastro TTR, pertanto di risparmierà non poco evitando cartucce o inchiostro. Ho stampato gia diverse etichette e non ho mai avuto nessun tipo di problema, le stampe sono chiare e leggibili, pertanto mi sento di consigliarla senza alcun dubbio.
P**N
Bra printer
Enkel installation på min Mac. Smidig att få ut fraktsedlar. Det kunde kanske kunnat vara med några provetiketter eller en första rulle.
N**.
Klare Kaufempfehlung
Der Etikettendrucker überzeugt mich auf ganzer Linie. Die Einrichtung unter Windows war in weniger als 30 Sekunden erledigt – einfacher geht es wirklich nicht. Auch die Bedienung ist sehr unkompliziert und damit absolut anfängerfreundlich. Die Druckqualität ist hervorragend: Texte sind gestochen scharf und auch QR-Codes sowie Barcodes werden sauber und problemlos lesbar dargestellt. Das ist gerade für den Versand ein großer Pluspunkt, da Scanner die Etiketten sofort erkennen. Besonders hervorheben möchte ich das Preis-Leistungs-Verhältnis. Für diesen Preis erhält man einen zuverlässigen und hochwertigen Drucker, der locker mit deutlich teureren Geräten mithalten kann. Ein kleiner Punkt, den man einplanen sollte: Das Skalieren von Versandetiketten auf das A4-Format erfordert ein wenig Übung. Hat man den Dreh aber einmal raus, lassen sich die Etiketten problemlos anpassen und auf dem Gerät ausgeben. Alles in allem ein top Gerät für den Versandalltag – zuverlässig, einfach und günstig. Absolute Empfehlung!
P**.
Excellent
It works out of the box, with their supplied USB cable, power supply & lead. Easy to set up: connect the cables, turn it on, load the labels, close the lid and press the top button to calibrate it for the installed labels. Comes with a getting started leaflet, plus a USB drive with everything else you'd need on it: manuals, videos & drivers. Their website and online support is easily found via the QR code in the packaging. The A6 labels are printed so quickly and yet the quality is excellent.
E**E
Useage
Super easy to install and to use!
Trustpilot
1 month ago
2 months ago