This is one tiny MP3 player! But it’s also super easy to print and put together, with no soldering or electronic assembly whatsoever. Perfect for working out at the gym, running your favorite trail or taking to the football game so you can tune into your favorite commentary! It features an inbuilt FM radio (FM87.0~108MHz) and supports micro SD/TF cards up to 8GB to store all your favorite tunes. It has an inbuilt lithium-ion battery that will keep those tunes pumping for around 5 hours. Charging the player is easy with the supplied USB to mini-USB cable. The printing files include a detachable collar clip so you can easily clip this little printed gadget to your clothing and show it off! Note: Earphones and memory card not included in electronics kit. Once you've downloaded the major STL file visit http://www.project3dprint.com to order the electronics kit for this project and download the remaining assembly STL files all together! The kit will be posted to you via FREE global shipping! In the mean time you can get printing! Lastly, watch the instructional video on how to assemble it all together! Watch instructions and printing tips at: http://www.instructables.com/id/Mini-MP3-Player/