A kettle boils water, no more and no less. This is what makes the Arendo Stainless Steel Glass kettle incl. LED lighting. He is described with LED lighting. Is nice, but not necessary. He would probably bring even without lighting the water to a boil. For the maximum filling of 1,7 l of Arendo from the "cold start" and without calcification five minutes takes 40 seconds, for the minimal filling of 0,5 l 1 37 minutes seconds. There are certainly faster, but okay for 2200 Watt and I need no Blitzkocher. As can be seen in the picture, you can see well during the cooking process, the energy rather comes from the area where the "on-switch" is. The opposite side is not so much them. All in all a kettle you can to buy without hesitation.
