Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: How long exactly does it take for the water to be brought to a boil?  In the description is says "quickly", but I want to know more specifically.
Document: I came home one day to find the kettle had been on most of the day because someone forgot they'd hit the button. No blame to the designers since a timer would cost more to incorporate, but consumers might want to know. The power company probably would've been happy if I'd forgotten several more days.The metal pour lip is fantastic, putting water exactly where one is pointing, without drivel.All in all, great water kettle.
If it's been on "keep warm" for a while and I want it  boiling again, I just flip it back "On" and it brings the water back up to a boil really fast. Yay!Also, if you take it off of the base while it is heating, it will go right back to heating when you put it back. Great product, and I expect it to last for a while with the stainless construction and sturdy buttons.
This is exactly what I was looking for. I live in a studio apartment on the east coast without central air conditioning, and I wanted to find ways to cook and boil water without additional hassle or heat during the summer. This water boiler is fast and sturdy, working great for heating up water for tea, ramen, blanching fruits/veggies, etc. It shipped quickly too, which is always nice.
i really like this kettle. it boils water very fast, does not take up much counter space and is cordless. exactly what i needed.
It's not perfect. It runs about 15 degrees cooler than the readout says. If you want an inexpensive variable temp kettle and you can subtract by 15 in your head, get this kettle!
I chose this because I don't like ugly things on my counter. It works great, fheats quickly . It does the job even 1-2 years  later. It does everything it says it does well. Con:  When the water starts to heat it is very loud. For that reason I will try another brand next time.
This works well, although it does seem to take a while to heat up. The base feels flimsy but I like that the cord can be kept underneath. The automatic shutoff function is great. The warm button is a nice feature but doesn't seem to keep the water very warm over a long period of time.
That is okay, but I want to know my water is hot before I make my tea even though I let it set before I drink it. It doesn't matter if you are heating a fresh pot of water or reheating the time is very good for getting the hot water you need.
I am a long-time owner (15+ yrs) of a 1.8 liter white plastic lidless Oster Cordless kettle so went to Oster for an updated look for home, and planned to take my old one to my office. After boiling water in the Oster 5965 three times, I decided to return it to Amazon at my expense.
I love love love this kettle! It is exactly what i was looking for. It heats water quickly, faster than the microwave, and shuts itself off, which is a major plus for me. I have it set up on my kitchen counter and it takes up little space. I researched electric kettles alot + I have had friends who have had them but I like mine the best.
Answer: I timed it using 40 degree well water with slight scale deposits and came up with 6 1/4 minutes, with hot tap water and same scale it took 4 1/4 minutes.