HOW TO PLAY- Give it a gently push.,but please try carefully and slowly, just avoid any drop and break, it is proving the scientific and mesmerizing you for hours. SWING TIME- Most of material is high quality metal, has a smooth , will not rusty and fade, always looks as good as new. The toy continued in perpetual motion for ONLY 2-3 minute due to the resistance of the air and friction. EXQUISITE GIFT-This is an amazing and fantastic product at this price, it can be a great gift to your families or friends. It also can be used for teaching purpose, many of our customers comes from school, colleague, easy to install and uninstall. TIME - It's a classic and funny desk toys, this cool toy like be a good when you lay it in your office or your home, it is a perfect desk toy to kill time, relieve stress and tune out boring coworkers without go out of the office. Colour:As Shown Material:Metal Package Contents: 1x Desktop Decoration Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.