This 3D wooden puzzle is a classic hand-rotating Gramophone, which is inspired by the original one invented by Thomas Edison. Retro style, designed with a vintage record player, It is not only just a wooden model but also an actual gramophone that can play records. To begin your assembly, pop out the individual laser-cut pieces from the pre-cut wooden sheets. With no batteries or glue required, it's an awesome project for puzzle enthusiasts to piece together from scratch! Crank up your gramophone after assembly and watch as the intricate inner gears kickstart the mesmerising motion. You can play your records using the hand-crank generator, or power it directly through the micro USB port to an external power supply. Recommended for ages 14 and up.