DemerBox: Waterproof, Portable, and Rugged Outdoor Bluetooth Speakers. Loud Sound, Deep Bass, 40+ hr Battery Life, Dry Box + USB Charging, Multi-Pairing Party Mode. Built to Last

This product is the best blue tooth speaker I have ever taken on the river. The sound quality is amazing and you can make the box water proof. Easy to connect to. Battery life is 12 hours!!!! I can even charge my phone off it while playing music. It 's out of control cool!Amazing sound qualitySturdy constructionWater resistant to water proof (depending on how you set it up)Usable featuresIf I had one this to say might be improvable is that when you float this in the pool it flips over and puts the speaker side in the water.

This speaker is awesome. Expensive for a Bluetooth speaker? Yes. Worth it? Yes, yes, yes!If you’re comparing the sound quality to an upper level Bose or equivalent Bluetooth speaker then you may be a little disappointed. These speakers aren’t water proof and incredibly durable like the Demerbox is though. The treble leaves some to be desired but that is characteristic of water proof rubber speakers. This isn’t a dealbreaker at all though. While it isn’t the clearest speaker in the world, it makes up for it with punchy bass and solid mids, not to mention it can get super loud. I had a Big Jambox and it gets louder than the big jambox could. When the speaker is turned all the way up it doesn’t crackle at all. The sound is perfect all the way up. We used it on a boat while tubing and were able to jam out to good tunes even with the 150hp Mercury revved all the way up.The added feature of a Bluetooth charging port is absolutely clutch. We easily can jam out all day with the super long battery life and then have the phone charging at the same time inside the speaker while maintaining waterproof status with the plug installed. I threw the speaker in the water with my phone in it and it didn’t leak a drop and sounded cool reverberating on the water.My favorite part beside the killer battery life which will easily last you a week or more on a single charge depending on how many times you charge your phone, is the ease of use. This speaker has 1 button. You turn it on and it links up with your phone instantly. You can control the volume completely from your phone and don’t have to worry about turning your phone up and then dealing with another volume on the speaker too. Literally just turn it on and start jamming. Nothing to it.One last feature I love is the long range Bluetooth. I was jamming in the backyard, went inside to do some stuff and had my phone in my pocket and my friends said it never lost connection at all. I haven’t gone to the point where it disconnected yet.Overall, you have to decide what you’re going to use the speaker for. I am on the water and outdoors all the time, fishing, wake boarding, bbqing, etc and this is perfect for that all weather rig. If you plan to use your speaker inside and don’t plan to move it then id say go get a bose. If durability and practicality aren’t a need then get a bose. If you want to jam out with all your buddies and get sweet sound quality in literally any situation you find yourself in and plan to ever listen to your tunes near water or outside.... get the Demerbox. It’s the only speaker I use now and I have a few other ones. Super sound and solid construction (I break everything) make this the one for me. You won’t be disappointed.

I purchased this to see if it could stand up next to my turtlebox. It does not, tho it’s a case that’s waterproof and that aspect is cool it is nowhere loud enough to hear next to the turtle let alone compare sound. 5 stars everything except the volume. Turtle box still #1 but this thing isn’t far behind.

Well....I was reluctant to spend this kind of dough on a speaker, but bit the proverbial bullet . I needed a speaker that was waterproof , could easily hold my phone and essentials on class 1-3 water as well as recreational. Got it on a friday ,fully charged it, and left for the water . I played it around the campsite for about 4-5 hours friday night , charged my phone and played it for about 5 hours on Saturday until the weather broke . Then, my wife took it on a 4 hour kayak ride while I stayed at camp. My wife came back with 2 leds still lit, about 25% or so. Charged a friends iphone for about 30 minutes , and then played some more music for about 2 hrs. Decided to charge it a little while a friend broke out his guitar. Come Sunday afternoon , i turned it back on for smoked pizzas in the backyard after charging my phone on the 1 hr ride home and its showing 3 leds or, more than 50%. All in all, for a camp/travel speaker , I honestly do not think you can get any better . A 1300 pelican case is 60$, 2 8ohm rubber/waterproof drivers are 20-30$ , a class d bluetooth amp board is 20-40$, good 18650 batteries are a couple of bucks a piece but you really need a good spot welder for electronics to do it correctly (100-200$) . Then , you'll have to make foolproof cuts, wire it ,and make your own custom bass hole. Add it up. Sound , I'll give it 4 stars , loud enough for 15 at camp with no issue , but you'll be able to carry on a conversation so long as your not standing right beside it. No issues with bluetooth connectivity popping , bass is excellent without the bass port plugged in, and still good with it in. Treble is fine as well . Played rock, rap, and country on it . No issues so far . Just wished it was a hair louder , but I like to jam! Battery life, I dont even know how they do it. Their amp board must pull virtually no amps. Storage capacity , 5 stars . Plenty of room for 2 phones , car keys , wallet , and a sandwich.I attached a little video of the speaker playing with charging cables inside it .Update: 07/09/2019Took it to the jobsite with me today as a lunchbox . Never failed , started at 7am with 3 leds lit(I suppose a bit over 50%) and it had two by the time we shutdown for lunch (lunch was at 1230 or so) on full volume . Couldnt hear much when were running skid steer, but the speaker was over 20 ft away and the skidder was right beside us. So, this speaks now fulfilled my wants as a work speaker as well!

Yes. Why didn’t I have this years ago. Checks every box. Feels indestructible, way louder than expected. Take the plug out for much more base. Storage inside. Charge a phone. One easy on/off button. And it is truly waterproof. I’ve been dumping water and snow on it just for fun. The description, and advertising on this is spot on.