MEGOO Bluetooth LED Face Mask with Programmable App - Rechargeable Light Up Mask for Halloween, Cosplay, Masquerade Parties (Adult & Kids) - Perfect for Costume Events, Raves, and Themed Celebrations

We used this mask with several custom images uploaded via the app during a concert, and it lasted almost 9hrs. It was still images, no flashing or text.We successfully added 20 custom images in the app, but noticed that every time we turned on the mask and connected the mask to the app, 1/20 of the images would not work. The fix for this was to delete the image in question and reupload it. This constantly happened at every boot up, and it was always a random image. Not a deal breaker though, as it's not difficult to delete and reupload.The app was not hard to navigate. We tested for several days before taking it to the concert. During those days I noticed that every now and then, the app would disconnect from the mask, but it didn't affect the image already displayed. Once the app reconnected, the mask needed a restart if you wanted to change the already displayed image, since it wouldn't communicate with the app despite claiming to be reconnected. It wasn't frequent enough to really be an annoyance, but I wanted to mention in case anyone has this troubleshoot issue.This takes a very long time to charge, even on a fast charger. Way longer to charge than a standard smart phone that lasts 8+hrs. I think it was close to 4hrs from completely dead to 100% but I am not exactly sure on that time frameI attempted to use a portable anker battery on this at the concert when the battery finally died. I was not successful in getting it to stay on while it was charging - I didn't dabble too much but it seems that you can't charge and use this at the same time, you can only do one or the other.Comfort wise, this was extremely painful on the bridge of my nose, but was easily remedied with a padded band aid on the contact point prior to use. Visibility is limited which is probably a given, with zero peripheral vision. The velcro head strap is adjustable to be smaller and larger.This was a definite hit at the concert, and there's no image burn or dead pixels after the extensive use. If I can remember to come back here in a year and update, I'll definitely do that.Overall, the app connectivity and the need for a band aid on my nose are really the only complaints. I'd consider the band aid a non issue though since this mask covers my face anyways, and the app connection really wasn't a bother since I wasn't changing faces anyways.I decided on this specific mask based on YouTube videos of this exact megoo led mask. I did not get the one with video capability, so I can't add any feedback on video features. But definitely look up some YouTube videos of "megoo led mask" for some cool demos.