KJOY USB 5V LED Sign, Bluetooth, App Control, Flexible, Programmable Custom Text Pattern Animation Scrolling Display for Car, Store, Party, Bar, Hotel, Concert, 14.6''x3.6''

WOW! I literally just put these in my car and ran into the house to write this review! These are amazing! So easy to install. I had them up and running exactly what I wanted within 10 minutes! I am blown away and ordering more as soon as I hit submit. The quality is wonderful and they are perfect! Getting more for vehicles and for our business windows.

TLDR: works as advertised, great seller Want to give the seller mad props, for one. They are super-concerned that you're satisified with your purchase, and I'm good with that. That being said, I'm quite satisfied. The thing works more or less straight out of the box. Download the app, do the bluetooth thing, and zip-zap-zowie, you're up and running. The tape that comes with it for mounting is sort of so-so, and it might be that my particular installation has something to do with it, so no points off. Your mileage will vary. I attached it to a stiff piece of cardboard, and the whole thing fits nicely in my back window. The USB adapter and cables that come with it are more than adequate to reach from a front-seat power socket to the rear, unless you're driving a bus or something. I also like the inline switch, if you need to go dark quickly. My particular installation, I power it from a USB battery-brick. The app is pretty straightforward and easy to use. There's a bunch of admittedly cute built-in animations, and a mechanism to create your own. I'd like to see some improvments to the app - when building animations, it would be nice to have the option to use the previous 'frame' as the starting point for the next. Also, some cut-and-paste functionaility. But it's a work in progress, so I'll hang out to see what comes down the pipe.

We bought this for our church and it working out great colorful and easy to use it gets the message across

This is a really great way to not only advertise when mobile but have fun with others on the road. The "manual" is basic and doesn't describe all the functions very clearly, so I'm still experimenting but even the preloaded signs can be edited and saved. My only issue... And it may be that I haven't 100% figured out the programing yet... Is it is not easy to rapidly change between images you have created, especially if you have multiple images in a lineup and want to go to an individual that isn't in that ordered line up. Tho the adhesive roll that come with is pretty good, I found that cleaning the glass with 91% isopropyl alcohol and applying a very thin layer of window tint adhesive spray is much more effective at reducing the risk of the sign doing off on days with extended exposure to heat and sun. Not to mention the fact that using the spray exponentially reduces or eliminates the air bubbles that tend to form and mess with clear visibility in the daytime.

Great value for the price. I like the brightness of the light and color. The sign quality and easy use of the app. No problem with installing.

Love this, nice and bright with many things you can do and edits through the app!!

The first one broke in about a week so I bought another one. Let's see how long this lasts

Works great when just sitting. But hard to see when driving. Expensive for the quality.

Me gusto mucho, es facil de poner y de conectar.. yo lo tengo en mi cuarto y esta super bien.., lo unico es que el adesivo que viene incluido no es muy resistente

Works great so far I’ve had it for about 4 days I’ll leave another review if anything happens. It’s bright can be seen during the day just a bit dim in the sun, apps easy to use, was easy to set up, looking at ordering another for the driver side window as well

Easy to affix to my rear truck window with the supplied strong take which you apply to,it. I would reccomend that you plug it in first and find the proper orientation prior to affixing it to your vehicle window. I truly love its ease of use. It has a separate on of switch which you can affix near to you. And its use is so simple and so many visuals to use or use your own script.

facil de usar

It sticks to the window on it's own. Even in frigid weather. The display is bright and clear, though it can br tricky to get the correct direction for writing and arrows. Well worth the value, but now I want it to be longer. Buy the longer version if you want it for text. Otherwise, you can create speech or even pictures by drawing and writing as you see fit. As a first purchase test. This is great.