Copper kettle is the best of the past. Enjoy the shape that fits your modern lifestyle. Copper kettle (decomposes chlorine, disinfects, antibacterial action, and intake copper required for human body). The copper kettle is chlorine-free, disinfected, and essential for baby's development, making it ideal for dissolving hot water from baby's milk powder. Tested according to the certification of induction cooking heater cookware Can be used for a variety of heat sources other than gas and induction. Heat efficiency is approximately 25% more efficient than 18-8 stainless steel kettles (manufacturer tested).