Game console: Although the game console can provide a rich game experience, with the increasing saturation of the game market, it is easy for people to lose interest in the game console, or the console is idle because of limited game choices.

Tablet PC: Although the tablet PC was all the rage when it was launched, with the enhancement of smart phone functions and the thinness of notebook computers, the usage scenarios of the tablet PC were limited. Many people buy tablet computers and find that they are not often used and easily idle.

Digital camera: With the great improvement of mobile phone camera function, many people began to give up using traditional digital cameras. Although high-end digital cameras still have their own market, for ordinary consumers, their demand for digital cameras has greatly decreased.

E-reader: Although e-readers can simulate the feeling of real reading, in today's society, not many people can calm down and read, and they often do nothing when they are fresh.

Smart watches: Smart watches can provide various functions, such as notification and health monitoring. However, many people find that the frequency of use is not high after purchase, and it is easy to idle.