Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.