ROKR is a DIY wooden 3D puzzle craft kit featuring mechanical gear system. The Black Gum Gramophone is an assembled toy, but also a model of a phonograph that does not need batteries to play sound. This 3D wooden model simplifies the structure of the traditional phonograph and implements the functions of the phonograph by ingeniously using the transmission between gears, speed control, power generation and noise reduction in various parts. The item has been designed to target wide range of audience – ranging from hobbyists and puzzle builders to teens and adults who just loves making things! It can also become a great bonding project with smaller kids as a helper to find the right parts and teach them with how gears work. There are no scissors or any other tool required for assembly as all the parts fit together and lock themselves in without any glue. ROKR The Classic Gramphone is a perfect gift to bring and steal the attention on birthdays and as stocking stuffers to delight everyone with a kid inside their heart!