1.has top energy efficiency rating
The appliance is either Energy Star Certified, or has an EU energy efficiency rating of A++ or A+++. This means it consumes around 20-30% less energy than is required by the minimum local standards for energy efficiency.
2.annual power consumption
The more power per year a device consumes, the less energy efficient it is, making it more costly over time.
3.There is the option to adjust the height of the machine
You can adjust the height of the machine which means that if the floor is uneven you can level it out.
Audible noise is the noise that a device produces while in operation. Reduced audible noise improves quality.
The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.