I have one of those as well Adillo, but I woulxd recommend against purchasing one. Ours worked great for a while, but because of the design, the part that covers the opening no longer fits snuggly and thus the whistle does not really work anymore.
For those not familiar with this kettle I will try to explain how it works. To open the kettle to pour out the hot liquid you just pick it up by the handle. The handle is actually a lever. That action opens the spout cover.
What happened with ours is that because of repeated use the spout cover no longer goes all the way down to make a good seal. If I were to push down on the handle then it would seal, but as soon as I release the handle it would spring back up and break the seal.
It still makes a lot of noise when the water boils, but it does not whistle. That would probably work for the OP, but again I would not recommend the kettle because it is not working as designed. This has been the only Oxo product I have ever had any issue with.