- Perfect tech?gift?for birthdays and?special occassions?- Based on magnetic fields、 hovers in the air while spinning- Built by permanent?magnets and therefore will last indefinitely- All necessary parts and accessories are included- Some practicing and tweaking (via the included parts) required to achieve long suspension time- Comes with instructions in complete English                                                                                                                                Dimensions: 4.72 in x 4.72 in x 0.79 in<br />Weight: 23.35 oz