I have had this odd little unit - Mfine 088 - for a few years now and this unit is an incredible value - cheap, sounds great, works wonderfully. This is my "go to" travel unit because so many hotel rooms have lousy radios or none at all and TV is not a good source of music and I don't want to carry a separate BT speaker unit although I sometimes do for longer trips.MicroSD Card: I use a SanDisk Ultra 64 gb micro SD (not completely full) in it and it works flawlessly. I have tried others and they have all worked. You can d/l music from your computer etc to the micro SD Card and then just plug it in. There are no screens to tell you what is playing but your ears know and for 12 American, it's not even on a wish list. Truly plug and play here.Speaker: The speaker has depth and is rich-sounding - it has a fantastic sound - I was blown away by how good it sounds even at high levels and it does get loud - this of course is source dependent as I noted that some of my content is a lot louder than other songs so I have to turn it down. This is better sounding than several of my BT speakers. Clear, not muddy, with a slightly warm sound.Use with iPhone 8+ Poor Sound Solution: So just for the heck of it I tried a test. I used a standard 3.5mm stereo cable plug at both ends (the same as your headphones/headphones) and plugged that into the Mfine AUX and the other end into into a 3.5 mm Lightning adapter and that went into my iPhone. Et Voila! That is a clunky solution to Apple's inability to engineer sound. I need to use a short 6-12" cable - the 3 ft one was all I had on hand while traveling.FM: Press the pause/play button for 2 seconds and it automatically scans and loads each station that registers and then you can use the FF button to scroll through the stations. FM sound is equally good. I've used this in various urban areas and FM selectivity has been good and the station remains locked in - no FM drift etc.LED Light: This is one of those odd-little additions to this unit that works nicely. It lights up during charging by the way so charging overnight you may not want this next on your bedside table.Battery Life: I have had it on for 8-10 hours with battery life left. It uses a BL-5C flat battery - the kind that were popular in older cell phones - you may well have one lying around the house, if you want to have a back up. If not, these are cheap and freely available. That said, I have not needed to do so as battery life was very good.Inputs:Micro USB - this is the charger input.Headphone - self explanatoryAux - in - I found my iPhone 8 to have incredible poor sound output. I was listening to an audio book and it drove me crazy how inadequate the iPhone sound is. See solution above.USB - I have not used it yet so I decided to test it just for fun for this review.I plugged the Micro SD card into: a) Anker SD card thumb sized adapter with a micro SD input. Using the full SD card, it played perfectly but the micro-SD card did not. b) I-FlashDevice HD (3 way USB with micro-USB inside the USB, USB C, Lightning plug) - works fine. c) "USB Type-C/OTG Card Reader/Writer". USB and USB C at each end with SD and Micro slots on either side of the unit. This is a no name unit and it worked fine.I have given this to a friend who expressed great interest in it. I plan to buy a 3rd unit as a back up. Ultimately, the is the cost of a couple of coffees. If it doesn't work for you, return it or give it away.

Good little radio, nothing to complain about, can be used anywhere.

Works well, not the best sound in the world but it's more than good enough for listening to the radio, podcasts etc. (You can also plug it into an external speaker for improved sound quality). The thing that makes it indispensable for me is the micro SD card slot! I have two of these radios and a bunch of music and podcasts on micro sd cards. Great for camping trips and power failures. I charge it via a portable solar usb charger .

This is my 2nd unit. I loved my 1st one so much that I decided to get one more. Why not? They both still function perfectly, by the way. Everything that's advertised is true and correct. No exaggeration anywhere.The sound is really impressing, coming out of such a little thing.No need to start describing all the features again. Also make a fabulous little gift.I loaded 5 different micro SD cards, with my favorite music on them (one jazz, one rock, etc.). A little tedious to do, but well worth it when it's time to deliver.DO NOT LISTEN TO NEGATIVE REVIEWS TO GUIDE YOU ON THIS PRODUCT.... It's just marvelous, considering the price.

This mini speaker / mp3 player / FM radio has exceeded my expectations. It looks good, doesn't look cheap -- nice case finish. Awesome sound for such a tiny speaker. Of course don't expect professional sound quality but it's as good as you'll get considering how light and portable this thing is. It's very easy to use and with USB key + micro SD card support... you can carry a tremendous amount of music. Just make sure it's MP3 format, it doesn't read other formats.It even has a LED flashlight (small but very bright).All in all, for $20 it's awesome value for your money !

This is great little radio! It's exactly what I was looking for. I work construction and we're not allowed big radios but this is perfect. It's loud and small. 5 other people on my job got one and we all love it. I haven't had any problems. It's been dropped and covered in dust and is still working. The best part is the price! Any small construction radio is going to be close to $100.I recommend this radio to everyone on my job and to anyone interested in it!

UPDATE: 3-20-16 Well this thing rocked solid for almost a year but just the other day I went to plug in the headphone jack and it broke. Just fell inside the case. So I being the fix it kinda guy I thought I would just pull it apart and re solder it back on. OH HECK NO!! I think they put these things together with Guerrilla glue or something because as hard as I tried to pry this thing apart in the end it was a wreck. So in the trash it went. So I just bought another one. I mean, at this price and for what it does. Worth every penny. My friends at work cannot believe the sound that comes out of this little box. I'll admit. It still astounds me.Update: 10-11-15I just wanted to let everyone know that this thing is still rocking just like day one. I bought a bigger battery (2450mah Bl-5c High Capacity Gold 2430mAh BL-5C Business Battery with Overheat and overcharge protection built in) on Amazon and I can now run this thing for almost 8 hours full volume. If I run the volume about half it will run for over 12 hours. still great sound. Full volume does not stress the speaker at all. Perfect sound high or low. Simply the best little player.This has got to be the best little MP3, FM Radio player I have ever seen. I really wasn't sure what I was going to be getting and at $ 15.00 I wasn't expecting much. But holy smokes, I mean it's not hi-fi or nothing but for what it is it's got the best sound I have ever heard out of a box this size. This little player has got some very rich sound and impressive lows for such a little thing. This puts a regular radio to shame. So when I got it we plugged it in and let it charge for a bit just to make sure the battery was full. As it was charging, I put a bunch of MP3's on the new Micro SD card and let it rip. We played this little gem for 9 3/4 hours at half volume before it finally puttered out. I was so impressed that I bought another one just for me. Instructions were simple, but was missing the instructions for the button that you press to activate the memory for the FM. For that you just long press the play/pause button in the FM setting and let it rip. It will then load all the stations it can find into memory. On a side note for the MP3 playback. I took a bunch of my songs and copied them in a separate file and re-named all of them to just numbers 1-1000 or so and also did the same for all the special information so that the numbers were all that the player could see. I then copied the same playlist on both mine, and my wife's player in the same order and played the first song. Both players played different songs when starting the playlist, and both songs were not the number 1 song in the list from the SD card. The numbers on the unit were the same but the songs were not. I tried going from end to end and both played a totally different random song list. So my conclusion to this is that the unit does not play the songs from 1-1000 but shuffles them in whatever order it chooses. This was actually perfect for me as this player does not have a shuffle option. Over all a great little MP3 player and well worth the money.