The sander offers 250mm sanding discs on both sides. 

Similar to an angle grinder, the discs are also accelerated to 2800rpm. 

This allows you to use one side for rough work while the other is available for polishing. For example, sharpening, deburring and grinding metal, stone or concrete is no problem with the device. 

These are tasks that the 120W motor should be able to handle. The sander is corded. It therefore requires a power socket and sometimes an extension.