Review on Hario V60 Drip Kettle 350Ml by Balakrishna Tam

I bought this appliance to heat water in the microwave for making drinks, but the packaging says it is not suitable for microwave use . This almost completely defeats the purpose of this teapot for me. Hario recommends boiling water in another vessel and pouring it into an air kettle for pouring. The problem is that you lose a lot of heat when transferring water unless you preheat the air tank first. Why not just microwave it to avoid the hassle? I thought that was the crux of the matter in this case.