Hi, thanks for taking a look this speaker! The speaker consists of 3d printed case and a few electronic parts. The model is made by me and the parts are chosen by me. Feel free to make the speaker for yourself or even remix it. If you have any questions feel free to ask in the comments. In case you are wondering how the speaker looks and how to make the speaker you can look at this Youtube video: https://www.youtube.com/watch?v=XGPkOR0RYJs Features: * 75 minute playtime on full volume (Also depends on what 18650 battery you are using.) * Audio can be played using Bluetooth, sd card and usb stick. * High quality speakers (5 Watt) * Micro usb charger To make this speaker you'll need: * 18650 battery (I used a protected 18650 battery but the amplifier doesn't seem to be able to see when the battery is fully charged, I think this is because it is protected.) * DollaTek XH-A150 amplifier (https://www.amazon.nl/gp/product/B07K2Q43CQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1) * Speaker (https://www.amazon.nl/gp/product/B004GA0LFY/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1) * (x18) m3x20 metal bolts (m3x10 may also work) **Instructions:** * Solder the speaker on the cables that came with the amplifier. * Connect the cable with the amplifier. * Put a 18650 battery into the amplifier. * Turn it on using the switch and it should work. If it doesn't work the battery may be empty. * Print the each part (use support when necessary) * Now, we have to make the holes for screws bigger, we can do this by rotating a screwdriver in the hole. * Put everything together (except the top) as seen in the photos (I used m3x20 metal bolts but they are a bit to big). Also the amplifier does not perfectly fit on the bottom so I used a mini sharpener to make the wholes bigger of the amplifier (be sure to not break your amplifier). * With the top put all screws in and put nuts on the screws. Then, kit the circumference of all nuts. Wait until the kit has dried and then remove the screws. Now we can fasten/remove the screws without having to be inside the speaker. * Turn it on and it works! Note: sound quality was not the goal. Also, it is a stereo board meaning you have to choose either the left or right channel.