Mobile phone shell and Finger Spinner

​Although finger tip was invented in 1990s, it was not until recent years that the toy began to burn. It was called a pressure artifact.
Now there is a mobile phone protective shell manufacturers brain hole wide open, if you put the finger top at home also never mind, as long as the use of the mobile phone shell them on the line, because the mobile phone shell was inlaid with a fingertip gyroscope.
At present, the protective shell is suitable for iPhone7 and iPhone7 Plus. The back of the protection shell has a small finger tip gyroscope. The user can remove the finger tip top, and also put it on top.

The price of the protection shell is about 177 yuan now. Do you think it's worth it?