The lid prevents contamination of the working nozzle of the remover and its contact with foreign objects. This piece of equipment is useful for storage and transportation. Of course, with proper packaging, the remover can be stored/transported without a lid — however, such packaging is not always available, and the lid, in turn, often allows you to do without improvised packaging at all.
The presence of a
charge indicator in the design of a battery-powered lint removers (see above). Such an indicator is usually light, and the format of its operation may be different. So, in some models, it signals that the device has been successfully connected to a power source and the charging process is in progress, in others it reports the end of the process, in others, these features are combined (for example, the LED lights up during charging and goes out when it ends); may provide displaying the current charge level, etc. However, this feature simplifies the maintenance of a battery-powered remover, and it has almost no effect on the price anyway.