I didn't use it a lot yet. I got it today and made a lot of testing with different devices.Overall it is a reeeeally nice product/gadget with a great cost-benefit ratio. For this price you WILL NOT get perfect quality anywhere, and hardly a better quality than this product provides.One really important thing you should keep in mind, projectors and projecting aren't a simple science. You have a lot of variables while using this product: cables you are using, adapters, the wall you are projecting on, the room clarity, the settings you can change in the projector (Brightness, Contrast, etc), your demand on the image quality (you may not want a great image to play an arcade game through your PS3, but you may want a really good image to play GTA V, for example. Just as you may find it great for watching comedy series, but not worth watching a full movie with lots of special effects and details. In many cases just projecting as a smaller screen improves the image a lot, in expense, of course, of having a smaller image. So keep in mind, this projector may be really good for some of your needs, but not so good for others. And it can be really useful and practical in some situations, but not at all in others.IMAGE: You need a dark room to get a nice image, I expected it, since it is a pico projector. So if you are planning on using it more on daytime, bright rooms or similar, you may need to consider spending more money on another projector. Maybe you can have a good enough image with some clarity in the room, but it will also depend a lot on the situation itself. Cables, device plugged, if you need to show small text or detailed images or not, if you are willing to project as a smaller screen and other variables.You can change some settings on Contrast, Brightness, but I couldn't notice big changes on the image. Maybe a little more practicing and testing can improve the image a little bit. But I didn't find it easy to do, since when you want to change this Settings, you go back to the main Menu, and you can't see the changes on the image in real time. The Menu appears on the screen, you make changes, then you go back to what you were watching and try to notice some possible improvement.According to what you're going to watch (movie, videogame, Netflix) you can have a REALLY big image with a little lower quality (bigger than 60 inches), but still really nice. Depends on the game, room clarity, cables, device, etc. I played an arcade game on my PS3 projecting on my entire bedroom wall and it was really great! GTA V also looked nice in a huge screen, but the night scenes made it kind of unplayable since you can't get much contrast and brightness on the landscape and the streets you are going through. So I had to project it as a 40 inches screen.In general, if you go until 50, max 60 inches, it will maintain the standard quality of the product.Also, you can get really good image if you want a small screen.Some people wrote that this projector might be good as flight entertainment, but judging by the distance you need to project an image bigger than an iPhone screen, I find this really hard to be true.Heads up, if you want this to play videogames keep in mind that some games demand a really good image because they have a lot of details, small text you need to read all the time, maps, mini maps and lots of dark scenes in-game, such as GTA V (when it's night time in the game). So some times it won't be comfortably playable in 60, 50 or even maybe 40 inches. And in some extreme cases, even projecting as 30 may not deliver a good enough quality, since text with small letters are an issue.In the other hand, for what I tested, projecting as a smaller screen will improve the image and make any projection more enjoyable and deliver a good quality. You need to consider how much screen size you are willing to give up, and if you will be able to easily find different positions for your projector. Since you will be moving it closer or further from the wall you are projecting on, according to how much quality you need.The focus is easily adjustable.Also, you have some pre sets of settings, such as adequate for Movies or Presentations. Please notice that only 1 "settings profile" is editable. This limits you, since you may find the need of having one setting specification for your PS3, another for your iPhone and another to watch Netflix, for example.IMPORTANT: A bad thing is that you can't adjust the image format digitally if the projector is diagonal to the wall you are projecting onto. This means you need to find the perfect position for your projector when you are going to use it. It must be 100% perpendicular to the wall, vertically and horizontally.A proper tall stable tripod solves this easily, but will cost you more money. Still a good cost-benefit ratio in my opinion.SOUND: I read people saying the built-in speakers are not good, but I tested it with videogames, Netflix and others, and I think that it is good enough depending on the situation and on your needs. Anyway, you have an audio output to connect better speakers or headphones.UTILITY: it is really light, not noisy but not silent (again, it depends, sorry to repeat this a lot, but it's the truth), it's the size of 2 iPhone 4S (one on the top of the other), it fits in your pocket, it turns on and off quickly, the Menus are simple and fast and I would say it is friendly user.One thing that pops out, is the fact that this pico projector is really versatile. It has features to solve various needs: USB, Mini SD Card, Mini HDMI, Composite A/V Connections, compatible with PC and Mac, and others.So this means that with the right accessories you can get a lot of utility from this device and make it more enjoyable. In my case, for the price I paid (it was on sale I think, about USD 115) I estimated that I could spend more money on accessories. Now I can connect it to my MacBook Air, to my iPhone and even to my PS3. And since the battery isn't enough for a regular full movie length, I got a battery bank that keeps the projector running even if the battery runs off. Of course this battery bank will serve me for other needs and devices as well. Also, little speakers can improve the sound experience, but I already have one.Remember this useful tip: although you can't charge it while you are using it, and the battery supposedly lasts 80 minutes, you can connect it to a battery bank as mentioned or to a wall charger, and keep it running (but not charging for what I noticed).I didn't test it with a SD Card nor a Pen Drive, but for what I read in other reviews, this features works fine for a lot of image and video formats.The tripod is kind of useful for some situations (on a table, on a chair), but it is not great and it doesn't stay the exact shape you want it to. Also, as it is light, it is not a really stable basis. Large or heavy cables connected to the projector can easily give you a hard time setting a good position for it.IMPORTANT: As I said, it may be kind of hard to set a stable proper position for the projector (depends A LOT on the furniture you have, the screen size you want, etc), because you can't correct the diagonal projection digitally, you need to put the projector perpendicular to the projecting wall. And you may also need to change its position with a high frequency, in order to adjust the screen size according to your needs at the moment.So consider where you are going to put it, the places you are going to use it and how often you may need to change its position. For this limitation, just as for others, the right accessory can leverage your projector. Any good tall tripod can solve this, but this demands more money. I suggest a tripod that is at least 3 foot tall.DEVICES USED WITH THE PROJECTOR- iPhone 4S with iOS 7.1.2: easy to use, just plug and play, but depending on the cables and adapters you are using, it might not work properly. In my case, the adapter I bought doesn't work with Netflix although it works with YouTube. But connecting your smartphone can also be useful for other things, such as showing pictures, watching videos in general or just navigating your Facebook timeline. I didn't test it, but I guess it is not so good for playing games on your smartphone, since the connection is through a HDMI cable and the projector is so light that any cable movement can move it, shake it or even make it fall. Again, I can't get Netflix to work because of the adapter I bought, nothing wrong with the projector itself for this matter.- Playstation 3: I had no sound the first time I connected it. So I explored a little my PS3 Audio Settings and made it work after a few tests. Apparently I had to choose for a lower audio quality or something like that and another thing about accepting different audio outputs I guess. As a result, the sound started working normally and I didn't notice an inferior sound quality. Maybe for connecting a Home Theater this details are more important, I can't tell for a lack of knowledge on the subject.You can play arcade and low graphic games in a projection bigger than 60 inches! But for other games you may need to maintain it under 60, 50 or even less to feel comfortable while playing. And since I didn't test many games, I venture to say that some games may be kind of annoying to play, since some games have texts with little letters, mini maps and other minor details that should be clear on the screen. But maybe just projecting as a smaller screen suits you good enough in most cases.As for the audio, some videogames may require better speakers or headphones.- MacBook Air: if you are willing to connect your computer to watch movies, series, general videos, YouTube, to show pictures or similar stuff, this projector suits great! But other than that this case is a little more complex. You can change settings on your computer to improve the projected image, but as far as I tested, this projector is not good for computers. As I said, you can also change the projector image settings, and adjust the focus and even project as a smaller screen until you get a nice detailed image, but computers involve a lot of reading, really small letters, small buttons, etc. And as much as I tested it, I couldn't manage to project an enjoyable, usable image with readable texts.SITUATIONSMany situations may require a taller more stable tripod. Having one will leverage your experience as a whole, just as by having proper accessories: right cables and adapters, a battery bank, an USB wall charger and possibly others.But some situations are just unviable for this pico projector even with the help of accessories. Such as if you need to project a presentation with small letters, if you need to project something outdoors, if you need to project a 60 or 50 inches screen with small details on the image, and other possible situations.Although, don't forget that it is really normal that this product requires some accessories to be more useful and enjoyable. There are numerous situations, reasons and applicability for this projector to be used (since it delivers a good quality image, is really portable, has a built in battery, built in speakers and different input options), and for this reason each person should look up which accessories to buy.- If you need portability for periods longer than 80 minutes, consider a battery bank. If you just need a battery that lasts longer, but you don't need portability, consider having an USB wall charger.- Look up which cables and adapters suit better the devices/media you are going to plug in the projector.- Think of the places you are willing to use it, and try to analyze if you have the furniture or tripod to place the projector correctly in order to achieve the size of the projection and the quality of the image wanted. If not, look up for tripods. They aren't super really cheap, but they will last long and save you a lot of time and headache. And they are also useful for other purposes, like cameras.- After thinking about the places you are willing to use it, try to predict if you will need to be moving the projector in order to achieve different image sizes and quality. For example, you may conclude that you will only use it in your bedroom, and you have a furniture to place it on. So you may think you don't need a tripod or another support. But then you remember that since you will be willing to play videogames and watch comedy series, you will need to constantly move the projector closer and further from the projection wall, in order to achieve the demanded quality and image size. In this case, you will need to analyze if you have where to place it on for each different demand of yours. If not, a tripod may be a good solution.Hope you enjoyed it and found this review useful.Best regards,Albert