DURABLE, STRONG, LASTS MUCH LONGER: We have REDESIGNED its key parts. Compared to other gyroscopes, ours can last much longer: so you don't have to comfort a crying/disappointed child after just a day or even an hour. Video attached containing some experiments that clearly show this great advantage of our product. The meaning of these experiments is: if it can survive a 15-foot fall, it can easily survive a 5-foot fall (in most cases when dropped, the height will be around 4-5 feet). PAY MORE TO GET A MUCH BETTER PLAY EXPERIENCE: We believe our DG-5PRO can provide a much better play experience because several key improvements have been made to make it more reasonably structured, much more robust, with a larger and thicker frame (can be held tightly when pulling the string, providing higher initial speed), heavier, and to make its rotor spin longer by using ball bearings. Is this worth the 20 or even 40 extra dollars you paid? You decide. GREAT TIME KILLER: It can magically stand on almost any surface: fingertip, the tip of a pen, or a string. Is truly addictive, especially for children (buy one for your children to buy yourself some peace and quiet). Our product is much more robust than all other traditional gyroscopes on the market, will survive when dropped from high places onto hard surfaces (which always happens). It is also great for adults: when you want to start or end a conversation, this is a very good choice. WHY CHOOSE US?: This product is a well-designed and manufactured mechanical toy, a great gift for people you love. Many have bought our gyroscopes as gifts for families, teachers, friends, and it rarely fails to cheer them up. Has gained a very good reputation since 2018. We hope you will like it and we hope you find it worth the money invested. And we stand behind it to guarantee it. The rotor's initial speed is about 8000 rpm. Personally, I enjoy holding it in my hand to feel its power when I'm bored. Can't say it's the best gyroscope out there, but considering the price, this is the best. IMPORTANT NOTE: SLIGHT VIBRATIONS ARE NORMAL ESPECIALLY WHEN IT JUST STARTS AS THE INITIAL SPEED IS TOO HIGH. PLEASE BE AWARE OF THIS BEFORE PLACING YOUR ORDER. (BASE COLOR MAY VARY.)