It is normal for the gyro to make a sound when it rotates. It is recommended to place it on a horizontal surface or rotate it vertically. Try to avoid tilting it when you put it on your hand. It is normal to have a slight shake when your hand is unstable. Please do not wash it with water, because the rotating ball in the bearing will have resistance when it touches water, affecting the rotation speed.
This gyro is processed by CNC precision machine tools with more than ten processes.It is made of imported 420 steel and the surface is anodized, which will never fade.
Product size: 7.3*2.8*0.7cm
Rotation system: imported bearings
Material: all 420 steel
Weight: 153 grams (including packaging)
Packaging: gift iron box
Others: 3 hexagon screwdrivers, 3 flat screwdrivers, and 3 cross screwdrivers are given.Built-in leveler.

Color: gray titanium, local gold, white, please specify when placing an order.